Fix the bug when a math image was contained by an "<a>" tag, there will be extra markup -{R| and }-.

Since the -{ and }- has been escaped, the Raw (-{R|text}-) markup are no longer needed.

languages/LanguageConverter.php

@@ -983,11 +983,10 @@ class LanguageConverter {
 	 * Wrap math into rawoutput -{R| math }- syntax.
 	 */
 	public function armourMath( $text ) {
-		// we need to convert '-{' and '}-' to '-{' and '}-'
-		// to avoid a unwanted '}-' appeared after the math-image.
+		// convert '-{' and '}-' to '-{' and '}-' to prevent
+		// any unwanted markup appearing in the math image tag.
 		$text = strtr( $text, array( '-{' => '-{', '}-' => '}-' ) );
-		$ret = "-{R|$text}-";
-		return $ret;
+		return $text;
 	}
 
 	/**