add fix-memory-leak-on-opening-corrupted-files.patch.

fix-memory-leak-on-opening-corrupted-files.patch

@@ -0,0 +1,21 @@
+commit cba2f967ebcc7e15d0f33e4219a1e04e2a6fc41e
+Author: David Bryant <david@wavpack.com>
+Date:   Sun Dec 8 12:06:19 2019 -0800
+
+    fix possible memory leak on opening corrupted files
+
+diff --git a/src/open_utils.c b/src/open_utils.c
+index 170c6eb..dfb7cf6 100644
+--- a/src/open_utils.c
++++ b/src/open_utils.c
+@@ -177,6 +177,11 @@ WavpackContext *WavpackOpenFileInputEx64 (WavpackStreamReader64 *reader, void *w
+             return WavpackCloseFile (wpc);
+         }
+
++        if (!wps->wphdr.block_samples) {    // free blockbuff if we're going to loop again
++            free (wps->blockbuff);
++            wps->blockbuff = NULL;
++        }
++
+         wps->init_done = TRUE;
+     }