[Gen User] Remove compilation warning of source and destination identical in...

[Gen User] Remove compilation warning of source and destination identical in sprintf. We want a concatenation.

MBsysC/mbs_app/user_file_generation/src/main.c

@@ -48,8 +48,7 @@ char* find_user_path(char* mbsfile) {
     // Check if file is in dataR folder.
     if (strcmp(ptr, "/dataR") == 0) {
         *ptr = '\0';
-        sprintf(userpath, "%s/userfctR/", userpath);
-
+        strcat(userpath, "/userfctR/");
     }
     else {
         printf("ERROR: the *.mbs file must be in the dataR folder. \n");