fix for bug #7285: Disable start of embedded server when need to

connect to an external server with mysqld.


libmysql/libmysql.c:
  fix for bug #7285: Disable start of embedded server when need to
  connect to an external server with libmysqld.
  
  Calling mysql_server_init with a negative value for argc will not
  start the embedded server.

libmysql/libmysql.c

@@ -158,7 +158,8 @@ int STDCALL mysql_server_init(int argc __attribute__((unused)),
     (void) signal(SIGPIPE, SIG_IGN);
 #endif
 #ifdef EMBEDDED_LIBRARY
-    result= init_embedded_server(argc, argv, groups);
+    if (argc > -1)
+       result= init_embedded_server(argc, argv, groups);
 #endif
   }
 #ifdef THREAD