improve readability of stdlib: fix indentation and remove trailing spaces

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>

Change-Id: I7dd90a0816b5376ffc1de4499d56935e0bd574a1
diff --git a/libc/stdlib/assert.c b/libc/stdlib/assert.c
index b439d8e..816b050 100644
--- a/libc/stdlib/assert.c
+++ b/libc/stdlib/assert.c
@@ -49,6 +49,6 @@
 	(void)fprintf(stderr,
 	    "assertion \"%s\" failed: file \"%s\", line %d, function \"%s\"\n",
 	    failedexpr, file, line, func);
-  abort();
+	abort();
 	/* NOTREACHED */
 }