[PATCH] Remove pointless check in zlib

We dereference 'z' a few lines above this check.
If it was possible to hit this condition, it wouldve
triggered long ago, in the form of a crash.

Spotted with the source checker from Coverity.com.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

lib/zlib_inflate/inflate.c

@@ -53,8 +53,6 @@ int zlib_inflateInit2_(
       return Z_VERSION_ERROR;
 
   /* initialize state */
-  if (z == NULL)
-    return Z_STREAM_ERROR;
   z->msg = NULL;
   z->state = &WS(z)->internal_state;
   z->state->blocks = NULL;