patch 8.2.3938: line comment start is also found in a string

Problem:    Line comment start is also found in a string.
Solution:   Skip line comments in a string.

src/version.c

@@ -749,6 +749,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3938,
 /**/
     3937,
 /**/