patch 8.0.1555: build error for some combination of features

Problem:    Build error for some combination of features.
Solution:   Declare variable in more situations.
diff --git a/src/main.c b/src/main.c
index cf937a3..793d549 100644
--- a/src/main.c
+++ b/src/main.c
@@ -111,7 +111,7 @@
 # endif
 (int argc, char **argv)
 {
-#ifdef STARTUPTIME
+#if defined(STARTUPTIME) || defined(CLEAN_RUNTIMEPATH)
     int		i;
 #endif