Bug 1343037 part 4. Fix type changes on an input to properly grab the selection offsets from the old editor before we ask the editor state for them. r=ehsan

MozReview-Commit-ID: IDdt0qedJpT

dom/html/HTMLInputElement.cpp

@@ -5136,6 +5136,7 @@ HTMLInputElement::HandleTypeChange(uint8_t aNewType)
   nsTextEditorState::SelectionProperties sp;
 
   if (GetEditorState()) {
+    mInputData.mState->SyncUpSelectionPropertiesBeforeDestruction();
     sp = mInputData.mState->GetSelectionProperties();
   }