revert line but print stacktrace & Mojang#16

Author: Bogdan-G

src/main/java/net/minecraft/launchwrapper/LaunchClassLoader.java

@@ -186,7 +186,7 @@ public Class<?> findClass(final String name) throws ClassNotFoundException {
             invalidClasses.add(name);
             if (DEBUG) {
                 LogWrapper.log(Level.TRACE, e, "Exception encountered attempting classloading of %s", name);
-                LogManager.getLogger("LaunchWrapper").log(Level.ERROR, "Exception encountered attempting classloading of %s", e);
+                LogManager.getLogger("LaunchWrapper").log(Level.ERROR, String.format("Exception encountered attempting classloading of %s", name), e);
             }
             throw new ClassNotFoundException(name, e);
         }

src/main/java/net/minecraft/launchwrapper/injector/VanillaTweakInjector.java

@@ -99,7 +99,7 @@ public static void loadIconsOnFrames() {
             });
             Frame[] frames = Frame.getFrames();
 
-            //if (frames != null) {
+            if (frames != null) {
                 final List<Image> icons = Arrays.<Image>asList(ImageIO.read(smallIcon), ImageIO.read(bigIcon));
 
                 for (Frame frame : frames) {
@@ -109,7 +109,7 @@ public static void loadIconsOnFrames() {
                         throwable.printStackTrace();
                     }
                 }
-            //}
+            } else {new NullPointerException().printStackTrace();}
         } catch (IOException e) {
             e.printStackTrace();
         }