Consistently use NULL for invalid GUC unit strings

Patch by Euler Taveira

diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 8111b93074aa9db48f5495b8b7e670efe1ee0ca8..dca533ac916fd843715d7784e38a5ac1065083bb 100644 (file)
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -7734,7 +7734,7 @@ GetConfigOptionByNum(int varnum, const char **values, bool *noshow)
                                values[2] = "min";
                                break;
                        default:
-                               values[2] = "";
+                               values[2] = NULL;
                                break;
                }
        }