gtkdoc-mkdb: fix warning about uninitialized var

Print source_dir if there is no dir match.

1 files changed, 1 insertions, 1 deletions

diff --git a/gtkdoc-mkdb.in b/gtkdoc-mkdb.in
index f6e1eb9..62bea10 100755
--- a/gtkdoc-mkdb.in
+++ b/gtkdoc-mkdb.in
@@ -3826,7 +3826,7 @@ sub ReadSourceDocumentation {
             @TRACE@("Skipping source directory: $source_dir");
             return;
         } else {
-            @TRACE@("No match for: $1");
+            @TRACE@("No match for: ".($1 || $source_dir));
         }
     }