Cleanup: quiet missing parenthesis & unused function warnings

intern/ghost/intern/GHOST_ContextVK.cc

@@ -1070,6 +1070,8 @@ GHOST_TSuccess GHOST_ContextVK::initializeDrawingContext()
                        VK_KHR_GET_SURFACE_CAPABILITIES_2_EXTENSION_NAME);
       optional_device_extensions.push_back(VK_EXT_SWAPCHAIN_MAINTENANCE_1_EXTENSION_NAME);
     }
+#else
+    (void)contains_extension;
 #endif
 
     required_device_extensions.push_back(VK_KHR_SWAPCHAIN_EXTENSION_NAME);

source/blender/gpu/opengl/gl_shader.cc

@@ -1772,7 +1772,7 @@ GLCompilerWorker *GLShaderCompiler::get_compiler_worker(const GLSourcesBaked &so
 
   GLCompilerWorker *result = nullptr;
   while (true) {
-    if (result = try_get_compiler_worker()) {
+    if ((result = try_get_compiler_worker())) {
       BLI_time_sleep_ms(1);
       break;
     }