--- src/parser/PngParser.cc.orig	2021-10-06 22:49:53.369697387 +0200
+++ src/parser/PngParser.cc	2021-10-06 22:51:06.073959192 +0200
@@ -68,6 +68,7 @@
   } catch (runtime_error &ex) {
     return false;
   }
+  return true;
 }
 
 void PngParser::initializeImage()
--- src/parser/JpegParser.cc.orig	2006-11-17 08:11:08.000000000 +0100
+++ src/parser/JpegParser.cc	2021-10-06 22:51:11.387360545 +0200
@@ -64,6 +64,7 @@
   } catch (runtime_error &ex) {
     return false;
   }
+  return true;
 }
 
 void JpegParser::tokenizeMarker(const string &base_token,
--- src/parser/GifParser.cc.orig	2021-10-06 22:49:53.373030763 +0200
+++ src/parser/GifParser.cc	2021-10-06 22:51:18.017445447 +0200
@@ -94,6 +94,7 @@
   } catch (runtime_error &ex) {
     return false;
   }
+  return true;
 }
 
 void GifParser::openImage()