Bug#274925: Fix SVG attribute leaks. r=sicking, sr=jst. SVG only - not part of default builds.

content/base/src/nsAttrValue.cpp

@@ -899,6 +899,13 @@ nsAttrValue::EnsureEmptyMiscContainer()
         delete cont->mAtomArray;
         break;
       }
+#ifdef MOZ_SVG
+      case eSVGValue:
+      {
+        NS_RELEASE(cont->mSVGValue);
+        break;
+      }
+#endif
       default:
       {
         break;