patch 8.2.0177: memory leak in get_tags()

Problem:    Memory leak in get_tags().
Solution:   Free matches when finding a pseudo-tag line. (Dominique Pelle,
            closes #5553)
diff --git a/src/version.c b/src/version.c
index fbb2ca5..e6935a2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    177,
+/**/
     176,
 /**/
     175,