improve readability of string: fix indentation and remove trailing spaces

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
diff --git a/libc/string/strcasecmp.c b/libc/string/strcasecmp.c
index 12f3a09..2be0913 100644
--- a/libc/string/strcasecmp.c
+++ b/libc/string/strcasecmp.c
@@ -98,8 +98,8 @@
 			if (cm[*us1] != cm[*us2++])
 				return (cm[*us1] - cm[*--us2]);
 			if (*us1++ == '\0')
-      break;
+				break;
 		} while (--n != 0);
-  }
+	}
 	return (0);
 }
diff --git a/libc/string/strchr.c b/libc/string/strchr.c
index e33694c..31ba4e2 100644
--- a/libc/string/strchr.c
+++ b/libc/string/strchr.c
@@ -38,6 +38,6 @@
 			return((char *)p);
 		if (!*p)
 			return((char *)NULL);
-  }
+	}
 	/* NOTREACHED */
 }
diff --git a/libc/string/strcoll.c b/libc/string/strcoll.c
index 365cad5..e3b1ec3 100755
--- a/libc/string/strcoll.c
+++ b/libc/string/strcoll.c
@@ -36,5 +36,5 @@
 int
 strcoll(const char *s1, const char *s2)
 {
-	return strcmp (s1, s2);
+	return strcmp(s1, s2);
 }
diff --git a/libc/string/strlcat.c b/libc/string/strlcat.c
index ad2215b..ceab094 100644
--- a/libc/string/strlcat.c
+++ b/libc/string/strlcat.c
@@ -46,9 +46,9 @@
 		if (n != 1) {
 			*d++ = *s;
 			n--;
-  }
+		}
 		s++;
-  }
+	}
 	*d = '\0';
 
 	return(dlen + (s - src));	/* count does not include NUL */
diff --git a/libc/string/strlcpy.c b/libc/string/strlcpy.c
index 38277eb..d32b659 100644
--- a/libc/string/strlcpy.c
+++ b/libc/string/strlcpy.c
@@ -37,7 +37,7 @@
 			if ((*d++ = *s++) == '\0')
 				break;
 		}
-  }
+	}
 
 	/* Not enough room in dst, add NUL and traverse rest of src */
 	if (n == 0) {
diff --git a/libc/string/strncat.c b/libc/string/strncat.c
index 1cb9405..c4df4f2 100644
--- a/libc/string/strncat.c
+++ b/libc/string/strncat.c
@@ -52,6 +52,6 @@
 			d++;
 		} while (--n != 0);
 		*d = 0;
-  }
+	}
 	return (dst);
 }
diff --git a/libc/string/strncmp.c b/libc/string/strncmp.c
index 9da41ab..1768808 100644
--- a/libc/string/strncmp.c
+++ b/libc/string/strncmp.c
@@ -38,14 +38,13 @@
 int
 strncmp(const char *s1, const char *s2, size_t n)
 {
-
 	if (n == 0)
 		return (0);
 	do {
 		if (*s1 != *s2++)
 			return (*(unsigned char *)s1 - *(unsigned char *)--s2);
 		if (*s1++ == 0)
-      break;
+			break;
 	} while (--n != 0);
 	return (0);
 }
diff --git a/libc/string/strncpy.c b/libc/string/strncpy.c
index b91091b..4426cbe 100644
--- a/libc/string/strncpy.c
+++ b/libc/string/strncpy.c
@@ -54,8 +54,8 @@
 				/* NUL pad the remaining n-1 bytes */
 				while (--n != 0)
 					*d++ = 0;
-      break;
-  }
+				break;
+			}
 		} while (--n != 0);
 	}
 	return (dst);
diff --git a/libc/string/strpbrk.c b/libc/string/strpbrk.c
index 6ba3796..cd3b71c 100644
--- a/libc/string/strpbrk.c
+++ b/libc/string/strpbrk.c
@@ -38,7 +38,7 @@
 {
 	const char *scanp;
 	int c, sc;
-  
+
 	while ((c = *s1++) != 0) {
 		for (scanp = s2; (sc = *scanp++) != 0;)
 			if (sc == c)
diff --git a/libc/string/strrchr.c b/libc/string/strrchr.c
index 2800781..4918f82 100644
--- a/libc/string/strrchr.c
+++ b/libc/string/strrchr.c
@@ -34,12 +34,12 @@
 strrchr(const char *p, int ch)
 {
 	char *save;
-  
+
 	for (save = NULL;; ++p) {
 		if (*p == ch)
 			save = (char *)p;
 		if (!*p)
 			return(save);
-  }
+	}
 	/* NOTREACHED */
 }
diff --git a/libc/string/strsep.c b/libc/string/strsep.c
index bcca681..c44bc5b 100644
--- a/libc/string/strsep.c
+++ b/libc/string/strsep.c
@@ -34,7 +34,7 @@
 
 /*
  * Get next token from string *stringp, where tokens are possibly-empty
- * strings separated by characters from delim.  
+ * strings separated by characters from delim.
  *
  * Writes NULs into the string at *stringp to end tokens.
  * delim need not remain constant from call to call.
diff --git a/libc/string/strstr.c b/libc/string/strstr.c
index debe96c..95a865b 100644
--- a/libc/string/strstr.c
+++ b/libc/string/strstr.c
@@ -51,6 +51,6 @@
 			} while (sc != c);
 		} while (strncmp(s, find, len) != 0);
 		s--;
-    }
+	}
 	return ((char *)s);
 }
diff --git a/libc/string/strxfrm.c b/libc/string/strxfrm.c
index f1843b5..3c4d707 100755
--- a/libc/string/strxfrm.c
+++ b/libc/string/strxfrm.c
@@ -29,7 +29,7 @@
 
 /*
  * Transform string s2 to string s1 using the current locale so that
- * strcmp of transformed strings yields the same result as strcoll. 
+ * strcmp of transformed strings yields the same result as strcoll.
  * Since Bionic really does not support locales, we assume we always use
  * the C locale.
  *