patch 7.4.1797

Problem:    Warning from Windows 64 bit compiler.
Solution:   Change int to size_t. (Mike Williams)

src/version.c

@@ -753,6 +753,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1797,
 /**/
     1796,
 /**/