From ba4036e290af32aa5c357abfef6632c08d520fff Mon Sep 17 00:00:00 2001
From: rdb <git@rdb.name>
Date: Sat, 19 Jan 2019 23:12:46 +0100
Subject: [PATCH] prc: clear error flag if loading deploy-ng blobinfo fails

---
 dtool/src/prc/configPageManager.cxx | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/dtool/src/prc/configPageManager.cxx b/dtool/src/prc/configPageManager.cxx
index 72e00f0189..b26eb17c69 100644
--- a/dtool/src/prc/configPageManager.cxx
+++ b/dtool/src/prc/configPageManager.cxx
@@ -129,7 +129,12 @@ reload_implicit_pages() {
 #else
   const BlobInfo *blobinfo = (const BlobInfo *)dlsym(dlopen(NULL, RTLD_NOW), "blobinfo");
 #endif
-  if (blobinfo != nullptr && (blobinfo->version == 0 || blobinfo->num_pointers < 10)) {
+  if (blobinfo == nullptr) {
+#ifndef _MSC_VER
+    // Clear the error flag.
+    dlerror();
+#endif
+  } else if (blobinfo->version == 0 || blobinfo->num_pointers < 10) {
     blobinfo = nullptr;
   }