cta-verify-file should return 1 on error

ReleaseNotes.md

@@ -11,6 +11,7 @@
 
 ### Bug fixes
 - cta/CTA#1120 - Fix negative disk space reservation content
+- cta-verify-file should return 1 on error
 
 ### Building and Packaging
 ### Catalogue Schema

cmdline/CtaVerifyFile.cpp

@@ -214,5 +214,5 @@ int main(int argc, const char **argv)
     std::cerr << "Caught an unknown exception" << std::endl;
   }
 
-  return 0;
+  return 1;
 }