From 72bdb51be1adf248e04ac8ddcffbbef53e026faa Mon Sep 17 00:00:00 2001
From: Marko Obrovac <mobrovac@wikimedia.org>
Date: Mon, 14 Dec 2015 23:28:40 +0100
Subject: [PATCH] Ask for the MathML and SVG renders only if the input is valid

Bug: T121445
Change-Id: I18b1ef4906f98cea99dca21d5a986a79c02cc233
---
 MathMathML.php | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/MathMathML.php b/MathMathML.php
index dff9f41..f407b45 100644
--- a/MathMathML.php
+++ b/MathMathML.php
@@ -96,10 +96,11 @@ class MathMathML extends MathRenderer {
 				$displaystyle = true;
 			}
 			$rbi = new MathRestbaseInterface( $tex, $displaystyle );
-			$rbi->checkTeX();
-			$this->mathml = $rbi->getMathML();
-			$this->svg = $rbi->getSvg();
-			$this->svgPath = $rbi->getFullSvgUrl();
+			if ( $rbi->checkTeX() ) {
+				$this->mathml = $rbi->getMathML();
+				$this->svg = $rbi->getSvg();
+				$this->svgPath = $rbi->getFullSvgUrl();
+			}
 			$this->changed = false;
 			return $rbi->getSuccess();
 		}