Fix signed/unsigned comparison

diff --git a/src/tracefunc.cpp b/src/tracefunc.cpp
index 54a924c..cbdadea 100644 (file)
--- a/src/tracefunc.cpp
+++ b/src/tracefunc.cpp
@@ -78,7 +78,7 @@ static PerThreadContainer *TLS_get_container()
  * @brief ensures indent level string to exist up to the desired level.
  * @param level the desired indent level.
  */
-static void ensure_indent_level(PerThreadContainer *per_thread, int level)
+static void ensure_indent_level(PerThreadContainer *per_thread, unsigned int level)
 {
     // First initialization?
     if (per_thread->indents.empty())