3rdparty(zlib): prevent uninitialized use of state->check

backporting of commit: 8afb2f0cb7

3rdparty/zlib/inflate.c

@@ -228,6 +228,7 @@ int stream_size;
     state->strm = strm;
     state->window = Z_NULL;
     state->mode = HEAD;     /* to pass state test in inflateReset2() */
+    state->check = 1L;      /* 1L is the result of adler32() zero length data */
     ret = inflateReset2(strm, windowBits);
     if (ret != Z_OK) {
         ZFREE(strm, state);

3rdparty/zlib/patches/20190330-ununitialized-use-state-check.diff

@@ -0,0 +1,12 @@
+diff --git a/3rdparty/zlib/inflate.c b/3rdparty/zlib/inflate.c
+index ac333e8c2e..19a2cf2ed8 100644
+--- a/3rdparty/zlib/inflate.c
++++ b/3rdparty/zlib/inflate.c
+@@ -228,6 +228,7 @@ int stream_size;
+     state->strm = strm;
+     state->window = Z_NULL;
+     state->mode = HEAD;     /* to pass state test in inflateReset2() */
++    state->check = 1L;      /* 1L is the result of adler32() zero length data */
+     ret = inflateReset2(strm, windowBits);
+     if (ret != Z_OK) {
+         ZFREE(strm, state);