hal/vulkan: Only decrement counter for raw shaders

The counter is decremented for raw and intermediate shaders but
only incremented for raw shaders, this lead to a negative counter
value and did not represent the number of allocated shaders.

Author: DeltaEvo

wgpu-hal/src/vulkan/device.rs

@@ -1954,11 +1954,11 @@ impl crate::Device for super::Device {
         match module {
             super::ShaderModule::Raw(raw) => {
                 unsafe { self.shared.raw.destroy_shader_module(raw, None) };
+
+                self.counters.shader_modules.sub(1);
             }
             super::ShaderModule::Intermediate { .. } => {}
         }
-
-        self.counters.shader_modules.sub(1);
     }
 
     unsafe fn create_render_pipeline(