updated for version 7.4a.018

Problem:    Compiler warning for code unreachable. (Charles Campbell)
Solution:   Use "while" instead of endless loop.  Change break to continue.

src/version.c

@@ -727,6 +727,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    18,
 /**/
     17,
 /**/