SL-19674 Disable "Blinn-Phong" when a PBR material is applied to make it clear...

SL-19674 Disable "Blinn-Phong" when a PBR material is applied to make it clear that those buttons are inoperable until you remove the PBR material.

indra/newview/llpanelface.cpp

@@ -1534,6 +1534,7 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
 			getChild<LLUICtrl>("checkbox fullbright")->setValue((S32)(fullbright_flag != 0));
 			getChildView("checkbox fullbright")->setEnabled(editable && !has_pbr_material);
 			getChild<LLUICtrl>("checkbox fullbright")->setTentative(!identical_fullbright);
+            getChild<LLComboBox>("combobox matmedia")->setEnabledByValue("Materials", !has_pbr_material);
 		}
 		
 		// Repeats per meter