Merge pull request #15864 from joscollin/wip-CID1412839-uninitialized…

…-pointer-field

common: initialize array in struct BackTrace

Reviewed-by: Kefu Chai <kchai@redhat.com>

src/common/BackTrace.h

@@ -14,7 +14,7 @@ struct BackTrace {
   const static int max = 100;
 
   int skip;
-  void *array[max];
+  void *array[max]{};
   size_t size;
   char **strings;