fix trailing comment

libc/sysdeps/linux/hppa/bits/syscalls.h

@@ -163,4 +163,4 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6
 }
 
 #endif /* __ASSEMBLER__ */
-#endif /* _ASM_PARISC_UNISTD_H_ */
+#endif /* _BITS_SYSCALLS_H */