GLShaderInterface: Fix interface from createInfo not setting bindings

This is because the `glUniform1i` calls were not preceeded by `glUseProgram`
which made parameters not stick.

source/blender/gpu/opengl/gl_shader_interface.cc

@@ -364,6 +364,9 @@ GLShaderInterface::GLShaderInterface(GLuint program, const shader::ShaderCreateI
   name_buffer_ = (char *)MEM_mallocN(info.interface_names_size_, "name_buffer");
   uint32_t name_buffer_offset = 0;
 
+  /* Necessary to make #glUniform works. TODO(fclem) Remove. */
+  glUseProgram(program);
+
   /* Attributes */
   for (const ShaderCreateInfo::VertIn &attr : info.vertex_inputs_) {
     copy_input_name(input, attr.name, name_buffer_, name_buffer_offset);