From cb091ea8447f92eb1f21218b569651276b0cf5c7 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 4 Sep 2019 07:52:06 +0530
Subject: [PATCH] Suppress compiler warning for unused parameter

---
 src/calibre/utils/podofo/fonts.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/utils/podofo/fonts.cpp b/src/calibre/utils/podofo/fonts.cpp
index e2dbe8cd63..dabfafe5c2 100644
--- a/src/calibre/utils/podofo/fonts.cpp
+++ b/src/calibre/utils/podofo/fonts.cpp
@@ -57,7 +57,7 @@ replace_font_references_in_resources(PdfDictionary &resources, const std::unorde
                 uint64_t key = ref_as_integer(k.second->GetReference()), r;
                 try {
                     r = ref_map.at(key);
-                } catch (const std::out_of_range &err) { continue; }
+                } catch (const std::out_of_range &err) { (void)err; continue; }
                 PdfReference new_ref(static_cast<uint32_t>(r & 0xffffffff), r >> 32);
                 new_font.AddKey(k.first.GetName(), new_ref);
                 changed = true;