Fix build by avoiding the _C_LABEL macro.

Change-Id: Ide367c2b65071388bd95fbc81a4ed6ae94aec4e4
diff --git a/libc/arch-mips64/syscalls/fallocate.S b/libc/arch-mips64/syscalls/fallocate.S
index dea8d27..347ab1f 100644
--- a/libc/arch-mips64/syscalls/fallocate.S
+++ b/libc/arch-mips64/syscalls/fallocate.S
@@ -30,5 +30,5 @@
     .set pop
     .end fallocate
 
-    .globl _C_LABEL(fallocate64)
-    .equ _C_LABEL(fallocate64), _C_LABEL(fallocate)
+    .globl fallocate64
+    .equ fallocate64, fallocate