prevent change[] over indexing

src/dir.c

@@ -499,7 +499,7 @@ static bool issrcfile(char *path) {
 	bool		looks_like_source = false;
 
 	/* ensure there is some file suffix */
-	if(s == NULL || *++s == '\0') return false;
+	if(s == NULL || *(++s) == '\0') { return false; }
 
 	/* if an SCCS or versioned file */
 	if(file[1] == '.' && file + 2 != s) { /* 1 character prefix */

src/input.c

@@ -248,7 +248,6 @@ static int global_input(const int c) {
 			}
 			break;
 		case '+':
-		case ctrl('L'):
 		case KEY_NPAGE:
 			if(totallines == 0) { return 0; } /* don't redisplay if there are no lines */
 			curdispline = 0;
@@ -386,7 +385,7 @@ int change_input(const int c) {
 			{
 				/* if a line was selected */
 				const int cc = dispchar2int(c);
-				if(cc != -1) {
+				if(cc != -1 && cc < totallines) {
 					change[cc] = !change[cc];
 					window_change |= CH_RESULT;
 				}