GPU: Fix additional GL_POP() causing validation errors

src/core/gpu.cpp

@@ -2340,8 +2340,6 @@ bool GPU::DeinterlaceExtractField(u32 dst_bufidx, GPUTexture* src, u32 x, u32 y,
     g_gpu_device->PushUniformBuffer(uniforms, sizeof(uniforms));
     g_gpu_device->SetViewportAndScissor(0, 0, width, height);
     g_gpu_device->Draw(3, 0);
-
-    GL_POP();
   }
 
   dst->MakeReadyForSampling();

src/core/gpu_hw.cpp

@@ -4080,6 +4080,7 @@ void GPU_HW::DownsampleFramebufferAdaptive(GPUTexture* source, u32 left, u32 top
   if (!m_downsample_texture || !level_texture || !weight_texture)
   {
     ERROR_LOG("Failed to create {}x{} RTs for adaptive downsampling", width, height);
+    GL_POP();
     return;
   }