patch 8.0.0049

Problem:    When a match ends in part of concealed text highlighting, it might
            mess up concealing by resetting prev_syntax_id.
Solution:   Do not reset prev_syntax_id and add a test to verify. (Christian
            Brabandt, closes #1092)

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    49,
 /**/
     48,
 /**/