patch 7.4.865
Problem:    Compiler warning for uninitialized variable.
Solution:   Initialize.
diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index 3cc2d45..30f9e9d 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -2447,7 +2447,7 @@
 #endif
     char_u	*p_shm_save;
 #ifdef FEAT_QUICKFIX
-    int		qf_size;
+    int		qf_size = 0;
     int		qf_idx;
 #endif