initialize variable and fix WS

Zend/zend_language_scanner.l

@@ -592,7 +592,7 @@ ZEND_API int zend_convert_scanner_output(UConverter *conv, UChar **target, int *
 
 int zend_unicode_yyinput(zend_file_handle *file_handle, char *buf, size_t len TSRMLS_DC)
 {
-	size_t n;
+	size_t n = len;
 	const char *src = buf;
 
 #ifdef scottmac_0
@@ -614,10 +614,11 @@ int zend_unicode_yyinput(zend_file_handle *file_handle, char *buf, size_t len TS
 		n = zend_stream_read(file_handle, buf, len TSRMLS_CC);
 	}
 #endif
+	
 	/* Don't make any conversions if unicode=off */
-  if (!UG(unicode)) {
-  	return n;
-  }
+	if (!UG(unicode)) {
+		return n;
+	}
 
 	/* Autodetect encoding */
 	if (!SCNG(encoding_checked)) {