patch 8.0.0223: Coverity warns for an uninitialized variable

Problem:    Coverity gets confused by the flags passed to find_tags() and
            warnts for an uninitialized variable.
Solution:   Disallow using cscope and help tags at the same time.
diff --git a/src/tag.c b/src/tag.c
index bd0dd74..8389069 100644
--- a/src/tag.c
+++ b/src/tag.c
@@ -1256,6 +1256,7 @@
  * TAG_REGEXP	  use "pat" as a regexp
  * TAG_NOIC	  don't always ignore case
  * TAG_KEEP_LANG  keep language
+ * TAG_CSCOPE	  use cscope results for tags
  */
     int
 find_tags(
@@ -1423,6 +1424,14 @@
      */
     if (help_only)				/* want tags from help file */
 	curbuf->b_help = TRUE;			/* will be restored later */
+#ifdef FEAT_CSCOPE
+    else if (use_cscope)
+    {
+	/* Make sure we don't mix help and cscope, confuses Coverity. */
+	help_only = FALSE;
+	curbuf->b_help = FALSE;
+    }
+#endif
 
     orgpat.len = (int)STRLEN(pat);
 #ifdef FEAT_MULTI_LANG
@@ -2281,7 +2290,8 @@
 		     */
 		    *tagp.tagname_end = NUL;
 		    len = (int)(tagp.tagname_end - tagp.tagname);
-		    mfp = (char_u *)alloc((int)sizeof(char_u) + len + 10 + ML_EXTRA + 1);
+		    mfp = (char_u *)alloc((int)sizeof(char_u)
+						    + len + 10 + ML_EXTRA + 1);
 		    if (mfp != NULL)
 		    {
 			int heuristic;
diff --git a/src/version.c b/src/version.c
index cae4e7d..d92b6ed 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    223,
+/**/
     222,
 /**/
     221,