libc: fix fstatfs() implementation.

The syscall expects the size of the buffer as the second argument.

Change-Id: I99ede2fec7fcd385ca03ff022c2cffa4297bea8d
diff --git a/libc/arch-x86/syscalls.mk b/libc/arch-x86/syscalls.mk
index bd9a9ab..6ac3716 100644
--- a/libc/arch-x86/syscalls.mk
+++ b/libc/arch-x86/syscalls.mk
@@ -77,7 +77,7 @@
 syscall_src += arch-x86/syscalls/fchown.S
 syscall_src += arch-x86/syscalls/sync.S
 syscall_src += arch-x86/syscalls/__fcntl64.S
-syscall_src += arch-x86/syscalls/fstatfs.S
+syscall_src += arch-x86/syscalls/__fstatfs64.S
 syscall_src += arch-x86/syscalls/sendfile.S
 syscall_src += arch-x86/syscalls/fstatat.S
 syscall_src += arch-x86/syscalls/mkdirat.S
diff --git a/libc/arch-x86/syscalls/fstatfs.S b/libc/arch-x86/syscalls/__fstatfs64.S
similarity index 87%
rename from libc/arch-x86/syscalls/fstatfs.S
rename to libc/arch-x86/syscalls/__fstatfs64.S
index f72b3d4..f755244 100644
--- a/libc/arch-x86/syscalls/fstatfs.S
+++ b/libc/arch-x86/syscalls/__fstatfs64.S
@@ -2,11 +2,11 @@
 #include <sys/linux-syscalls.h>
 
     .text
-    .type fstatfs, @function
-    .globl fstatfs
+    .type __fstatfs64, @function
+    .globl __fstatfs64
     .align 4
 
-fstatfs:
+__fstatfs64:
     pushl   %ebx
     pushl   %ecx
     pushl   %edx