patch 8.2.3490: superfluous return statements

Problem:    Superfluous return statements.
Solution:   Remove superfluous return statements from void functions.
            (closes #8977)

src/buffer.c

@@ -3029,8 +3029,6 @@ buflist_setfpos(
     wip->wi_prev = NULL;
     if (wip->wi_next)
 	wip->wi_next->wi_prev = wip;
-
-    return;
 }
 
 #ifdef FEAT_DIFF

src/getchar.c

@@ -243,7 +243,6 @@ add_buff(
 	buf->bh_curr->b_next = p;
 	buf->bh_curr = p;
     }
-    return;
 }
 
 /*

src/memline.c

@@ -1786,7 +1786,6 @@ theend:
 	apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf);
 	apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf);
     }
-    return;
 }
 
 /*
@@ -3930,7 +3929,6 @@ ml_clearmarked(void)
     }
 
     lowest_marked = 0;
-    return;
 }
 
 /*

src/move.c

@@ -2682,7 +2682,6 @@ get_scroll_overlap(lineoff_T *lp, int dir)
 	*lp = loff1;	// 1 line overlap
     else
 	*lp = loff2;	// 2 lines overlap
-    return;
 }
 
 /*

src/option.c

@@ -6391,8 +6391,6 @@ set_context_in_set_cmd(
 	}
 #endif
     }
-
-    return;
 }
 
     int

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3490,
 /**/
     3489,
 /**/