preffer Protobuf_PROTOC_EXECUTABLE

Author: RayeS2070

cmake/SetupProtobuf.cmake

@@ -60,10 +60,10 @@ if(NOT USERVER_FORCE_DOWNLOAD_PROTOBUF)
 
     if(Protobuf_FOUND)
         _userver_set_protobuf_version_category()
-        if (TARGET protobuf::protoc)
-            set(PROTOBUF_PROTOC $<TARGET_FILE:protobuf::protoc>)
-        else()
+        if (Protobuf_PROTOC_EXECUTABLE)
             set(PROTOBUF_PROTOC "${Protobuf_PROTOC_EXECUTABLE}")
+        elseif (TARGET protobuf::protoc)
+            set(PROTOBUF_PROTOC $<TARGET_FILE:protobuf::protoc>)
         endif()
         return()
     endif()