patch 8.2.4531: LGTM warnings for condition and buffer size

Problem:    LGTM warnings for condition always true and buffer size too small.
Solution:   Remove the useless condition.  Make the buffer larger. (Goc
            Dundar, closes #9914)
diff --git a/src/charset.c b/src/charset.c
index 836a9f6..657ab85 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -558,7 +558,7 @@
 	charbuf[1] = c ^ 0x40;		// DEL displayed as ^?
 	charbuf[2] = NUL;
     }
-    else if (enc_utf8 && c >= 0x80)
+    else if (enc_utf8)
     {
 	transchar_hex(charbuf, c);
     }
diff --git a/src/term.c b/src/term.c
index 14a05de..8709cd3 100644
--- a/src/term.c
+++ b/src/term.c
@@ -6370,7 +6370,7 @@
     static void
 req_more_codes_from_term(void)
 {
-    char	buf[11];
+    char	buf[23];  // extra size to shut up LGTM
     int		old_idx = xt_index_out;
 
     // Don't do anything when going to exit.
diff --git a/src/version.c b/src/version.c
index 0aff73a..9b25ef0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4531,
+/**/
     4530,
 /**/
     4529,