patch 8.0.0061
Problem:    Compiler warning for unused variable.
Solution:   Add #ifdef. (John Marriott)
diff --git a/src/popupmnu.c b/src/popupmnu.c
index 6a75686..19d215b 100644
--- a/src/popupmnu.c
+++ b/src/popupmnu.c
@@ -60,7 +60,9 @@
     int		above_row;
     int		below_row;
     int		redo_count = 0;
+#if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
     win_T	*pvwin;
+#endif
 
 redo:
     def_width = PUM_DEF_WIDTH;