Fixup some C++ comments

file_ops.c

@@ -166,14 +166,14 @@ bool read_compressed_file(const char * path, void **buf,
       }
    }
 
-   //We split carchive path and relative path:
+   /* We split carchive path and relative path: */
    strlcpy(archive_path, path, sizeof(archive_path));
 
    archive_found = (char*)strchr(archive_path,'#');
 
    rarch_assert(archive_found != NULL);
 
-   //We assure that there is something after the '#' symbol
+   /* We assure that there is something after the '#' symbol. */
    if (strlen(archive_found) <= 1)
    {
       /*