updated for version 7.3.802

Problem:    After setting 'isk' to a value ending in a comma appending to the
            option fails.
Solution:   Disallow a trailing comma for 'isk' and similar options.

src/charset.c

@@ -284,7 +284,12 @@ buf_init_chartab(buf, global)
 		}
 		++c;
 	    }
+
+	    c = *p;
 	    p = skip_to_option_part(p);
+	    if (c == ',' && *p == NUL)
+		/* Trailing comma is not allowed. */
+		return FAIL;
 	}
     }
     chartab_initialized = TRUE;

src/version.c

@@ -725,6 +725,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    802,
 /**/
     801,
 /**/