patch 8.2.0370: the typebuf_was_filled flag is sometimes not reset

Problem:    The typebuf_was_filled flag is sometimes not reset, which may
            cause a hang.
Solution:   Make sure typebuf_was_filled is reset when the typeahead buffer is
            empty.

src/edit.c

@@ -1612,6 +1612,10 @@ decodeModifyOtherKeys(int c)
 	    // Match, consume the code.
 	    typebuf.tb_off += idx + 1;
 	    typebuf.tb_len -= idx + 1;
+#if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL)
+	    if (typebuf.tb_len == 0)
+		typebuf_was_filled = FALSE;
+#endif
 
 	    mod_mask = decode_modifiers(arg[!form]);
 	    c = merge_modifyOtherKeys(arg[form]);

src/getchar.c

@@ -421,6 +421,10 @@ flush_buffers(flush_buffers_T flush_typeahead)
 	// remove mapped characters at the start only
 	typebuf.tb_off += typebuf.tb_maplen;
 	typebuf.tb_len -= typebuf.tb_maplen;
+#if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL)
+	if (typebuf.tb_len == 0)
+	    typebuf_was_filled = FALSE;
+#endif
     }
     else
     {
@@ -1283,6 +1287,9 @@ alloc_typebuf(void)
     typebuf.tb_no_abbr_cnt = 0;
     if (++typebuf.tb_change_cnt == 0)
 	typebuf.tb_change_cnt = 1;
+#if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL)
+    typebuf_was_filled = FALSE;
+#endif
     return OK;
 }
 

src/version.c

@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    370,
 /**/
     369,
 /**/