Ristsender Segfault on SIGINT when compiled with buildtype=release

diff --git a/tools/ristsender.c b/tools/ristsender.c
index 9f90409..23ca1ef 100644
--- a/tools/ristsender.c
+++ b/tools/ristsender.c
@@ -581,7 +581,7 @@ next:
                goto shutdown;
        }
 
-       pthread_t thread_main_loop[MAX_INPUT_COUNT+1];
+       pthread_t thread_main_loop[MAX_INPUT_COUNT+1] = { 0 };
 
        if (evctx && pthread_create(&thread_main_loop[0], NULL, input_loop, (void *)callback_object) != 0)
        {