linux-user/syscall.c: remove warning: ‘array’ may be used uninitialized in this function

Removes the following warning

CC    i386-linux-user/syscall.o
cc1: warnings being treated as errors
/media/nfs/qemu/linux-user/syscall.c: In function ‘do_syscall’:
/media/nfs/qemu/linux-user/syscall.c:2219: warning: ‘array’ may be used uninitialized in this function
Signed-off-by: NVibi Sreenivasan <vibi_sreenivasan@cms.com>
Signed-off-by: NRiku Voipio <riku.voipio@iki.fi>

linux-user/syscall.c

@@ -2241,7 +2241,7 @@ static inline abi_long do_semctl(int semid, int semnum, int cmd,
 {
     union semun arg;
     struct semid_ds dsarg;
-    unsigned short *array;
+    unsigned short *array = NULL;
     struct seminfo seminfo;
     abi_long ret = -TARGET_EINVAL;
     abi_long err;