patch 8.2.3348: line2byte() returns wrong value after adding textprop

Problem:    line2byte() returns wrong value after adding textprop. (Yuto
            Kimura)
Solution:   Reduce the length by the size of the text property. (closes #8759)

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3348,
 /**/
     3347,
 /**/