Refine integer signedness use for static analyizers (#24)


diff --git a/test/run_tests.c b/test/run_tests.c
index 133103f..f8ed83b 100644
--- a/test/run_tests.c
+++ b/test/run_tests.c
@@ -288,7 +288,7 @@
 
    (*pfOutput)(szWhat, pOutCtx, 0);
    (*pfOutput)(" ", pOutCtx, 0);
-   (*pfOutput)(NumToString(uSize, buffer), pOutCtx, 0);
+   (*pfOutput)(NumToString((int32_t)uSize, buffer), pOutCtx, 0);
    (*pfOutput)("", pOutCtx, 1);
 }