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;
     }