Typo

bazel/grpc_build_system.bzl

@@ -60,7 +60,7 @@ def grpc_cc_library(name, srcs = [], public_hdrs = [], hdrs = [],
     defines = select({"//:grpc_no_ares": ["GRPC_ARES=0"],
                       "//conditions:default": [],}) +
               select({"//:remote_execution":  ["GRPC_PORT_ISOLATED_RUNTIME=1"],
-                      "//conditions:default": [],} +
+                      "//conditions:default": [],}) +
               select({"//:grpc_allow_exceptions":  ["GRPC_ALLOW_EXCEPTIONS=1"],
                       "//:grpc_disallow_exceptions":
                       ["GRPC_ALLOW_EXCEPTIONS=0"],