fix false replacement of "$t" inside double quotes

thanks to checat for reporting this

NEWS

@@ -1,3 +1,4 @@
+- fix false replacement of "$t" inside double quotes (checat, messju)
 - added support for column headings and caption element to html_table and
   updated the output to use thead/tbody elements (boots)
 - fixed ordering of replacements in trimwhitespace output filter (Getty, boots)

libs/Smarty_Compiler.class.php

@@ -1671,11 +1671,11 @@ class Smarty_Compiler extends Smarty {
         // if contains unescaped $, expand it
         if(preg_match_all('~(?:\`(?<!\\\\)\$' . $this->_dvar_guts_regexp . '(?:' . $this->_obj_ext_regexp . ')*\`)|(?:(?<!\\\\)\$\w+(\[[a-zA-Z0-9]+\])*)~', $var_expr, $_match)) {
             $_match = $_match[0];
-            rsort($_match);
-            reset($_match);
+            $_replace = array();
             foreach($_match as $_var) {
-                $var_expr = str_replace ($_var, '".(' . $this->_parse_var(str_replace('`','',$_var)) . ')."', $var_expr);
+                $_replace[$_var] = '".(' . $this->_parse_var(str_replace('`','',$_var)) . ')."';
             }
+            $var_expr = strtr($var_expr, $_replace);
             $_return = preg_replace('~\.""|(?<!\\\\)""\.~', '', $var_expr);
         } else {
             $_return = $var_expr;