updated for version 7.2.347

Problem:    Crash when executing <expr> mapping redefines that same mapping.
Solution:   Save the values used before evaluating the expression.

src/version.c

@@ -681,6 +681,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    347,
 /**/
     346,
 /**/