[PATCH v1] configure: fix malloc check

[Olaf Hering]

Avoid random return value.

Fixes commit f2dfe54c74f768a5bf78c9e5918918727f9d9459

Signed-off-by: Olaf Hering <olaf@aepfle.de>
---
 configure | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure b/configure
index 5d6f5a7f57..85f3662b8e 100755
--- a/configure
+++ b/configure
@@ -6305,6 +6305,7 @@ int main(void) {
     if (tmp != NULL) {
         return *(int *)(tmp + 2);
     }
+    return 1;
 }
 EOF
   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then