Fixed formatting and crash in ShaderTest

Shader in ShaderTest was not compiling. Log:
```
10-06 00:12:03.129: E/AndroidRuntime(16514): FATAL EXCEPTION: GLThread 739
10-06 00:12:03.129: E/AndroidRuntime(16514): com.badlogic.gdx.utils.GdxRuntimeException: Couldn't compile shader Compile failed.
10-06 00:12:03.129: E/AndroidRuntime(16514): ERROR: 0:1: 'float' : No precision defined for this type
10-06 00:12:03.129: E/AndroidRuntime(16514): ERROR: 1 compilation errors. No code generated.
10-06 00:12:03.129: E/AndroidRuntime(16514): 	at com.badlogic.gdx.tests.g3d.ShaderTest$TestShader.<init>(ShaderTest.java:79)
10-06 00:12:03.129: E/AndroidRuntime(16514): 	at com.badlogic.gdx.tests.g3d.ShaderTest$1.createShader(ShaderTest.java:135)
10-06 00:12:03.129: E/AndroidRuntime(16514): 	at com.badlogic.gdx.graphics.g3d.utils.BaseShaderProvider.getShader(BaseShaderProvider.java:34)
10-06 00:12:03.129: E/AndroidRuntime(16514): 	at com.badlogic.gdx.graphics.g3d.ModelBatch.render(ModelBatch.java:246)
10-06 00:12:03.129: E/AndroidRuntime(16514): 	at com.badlogic.gdx.tests.g3d.ShaderTest.render(ShaderTest.java:169)
10-06 00:12:03.129: E/AndroidRuntime(16514): 	at com.badlogic.gdx.backends.android.AndroidGraphics.onDrawFrame(AndroidGraphics.java:416)
10-06 00:12:03.129: E/AndroidRuntime(16514): 	at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1516)
10-06 00:12:03.129: E/AndroidRuntime(16514): 	at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)

```