Update zlib to 1.2.11

third_party/zlib/infback.c

 /* infback.c -- inflate using a call-back interface
- * Copyright (C) 1995-2011 Mark Adler
+ * Copyright (C) 1995-2016 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
 /*
    This code is largely copied from inflate.c.  Normally either infback.o or
    inflate.o would be linked into an application--not both.  The interface
    with inffast.c is retained so that optimized assembler-coded versions of
    inflate_fast() can be used with either inflate.c or infback.c.
  */
 
@@ skipping 41 matching lines @@
         return Z_STREAM_ERROR;
 #else
     strm->zfree = zcfree;
 #endif
     state = (struct inflate_state FAR *)ZALLOC(strm, 1,
                                                sizeof(struct inflate_state));
     if (state == Z_NULL) return Z_MEM_ERROR;
     Tracev((stderr, "inflate: allocated\n"));
     strm->state = (struct internal_state FAR *)state;
     state->dmax = 32768U;
-    state->wbits = windowBits;
+    state->wbits = (uInt)windowBits;
     state->wsize = 1U << windowBits;
     state->window = window;
     state->wnext = 0;
     state->whave = 0;
     return Z_OK;
 }
 
 /*
    Return state with length and distance decoding tables and index sizes set to
    fixed code decoding.  Normally this returns fixed tables from inffixed.h.
@@ skipping 556 matching lines @@
 int ZEXPORT inflateBackEnd(strm)
 z_streamp strm;
 {
     if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
         return Z_STREAM_ERROR;
     ZFREE(strm, strm->state);
     strm->state = Z_NULL;
     Tracev((stderr, "inflate: end\n"));
     return Z_OK;
 }