patch 8.2.3330: Coverity reports using uninitialized field

Problem:    Coverity reports using uninitialized field.
Solution:   Initialize the field early.

Author: brammool

src/tag.c

@@ -1680,6 +1680,7 @@ find_tags(
 
     help_save = curbuf->b_help;
     orgpat.pat = pat;
+    orgpat.regmatch.regprog = NULL;
     vimconv.vc_type = CONV_NONE;
 
     /*

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3330,
 /**/
     3329,
 /**/