Slightly better way to handle max_connections for embedded server.

storage/pbxt/src/ha_pbxt.cc

@@ -1175,12 +1175,13 @@ static int pbxt_init(void *p)
 		 * +1 Temporary thread (e.g. TempForClose, TempForEnd)
 		 */
 #ifndef DRIZZLED
-#ifdef EMBEDDED_LIBRARY
-                pbxt_max_threads = 100;
-#else
-		if (pbxt_max_threads == 0)
-			pbxt_max_threads = max_connections + 7;
-#endif
+		if (pbxt_max_threads == 0) {
+			// Embedded server sets max_connections=1
+			if (max_connections > 1)
+				pbxt_max_threads = max_connections + 7;
+			else
+				pbxt_max_threads = 100;
+		}
 #endif
 		self = xt_init_threading(pbxt_max_threads);				/* Create the main self: */
 		if (!self)