MDL-49518 libraries: Update lessphp to 1.7.0.3

lib/lessphp/Exception/Chunk.php

@@ -46,7 +46,7 @@ class Less_Exception_Chunk extends Less_Exception_Parser{
 	 * We don't actually need the chunks
 	 *
 	 */
-	function Chunks(){
+	protected function Chunks(){
 		$level = 0;
 		$parenLevel = 0;
 		$lastMultiCommentEndBrace = null;
@@ -173,12 +173,12 @@ class Less_Exception_Chunk extends Less_Exception_Parser{
 		//$this->emitChunk(true);
 	}
 
-	function CharCode($pos){
+	public function CharCode($pos){
 		return ord($this->input[$pos]);
 	}
 
 
-	function fail( $msg, $index = null ){
+	public function fail( $msg, $index = null ){
 
 		if( !$index ){
 			$this->index = $this->parserCurrentIndex;

lib/lessphp/Exception/Parser.php

@@ -99,7 +99,12 @@ class Less_Exception_Parser extends Exception{
 	 */
 	public function getLineNumber(){
 		if( $this->index ){
-			return substr_count($this->input, "\n", 0, $this->index) + 1;
+			// https://bugs.php.net/bug.php?id=49790
+			if (ini_get("mbstring.func_overload")) {
+				return substr_count(substr($this->input, 0, $this->index), "\n") + 1;
+			} else {
+				return substr_count($this->input, "\n", 0, $this->index) + 1;
+			}
 		}
 		return 1;
 	}