Use proper format for size_t printf

diff --git a/protogen.lua b/protogen.lua
index 3e611ddcb830dd0e6cace0d1570c29602ce9f78d..cd356e799c7f7391832c64d5a360e0a1b2af96d1 100755 (executable)
--- a/protogen.lua
+++ b/protogen.lua
@@ -88,7 +88,7 @@ emit_c([[
                return true;
 
        if (buffer->siz < len) {
-               fprintf(stderr, "[warning] buffer exhausted (requested bytes: %lu, remaining bytes: %lu)\n", len, buffer->siz);
+               fprintf(stderr, "[warning] buffer exhausted (requested bytes: %zu, remaining bytes: %zu)\n", len, buffer->siz);
                return false;
        }