Size of the active uniform at index

Property definitions

glesv2 $ GLProgram :: active_uniform_size
	# Size of the active uniform at `index`
	fun active_uniform_size(index: Int): Int `{
		int size;
		GLenum type;
		glGetActiveUniform(self, index, 0, NULL, &size, &type, NULL);
		return size;
	`}
lib/glesv2/glesv2.nit:161,2--167,3