Initialize the return value in collect_generations() since it is updated
conditionally in the code.
diff --git a/Modules/gcmodule.c b/Modules/gcmodule.c
index 8c0dc3d..43acbef 100644
--- a/Modules/gcmodule.c
+++ b/Modules/gcmodule.c
@@ -455,7 +455,7 @@
 {
 	static long collections0 = 0;
 	static long collections1 = 0;
-	long n;
+	long n = 0;
 
 
 	if (collections1 > threshold2) {