Let llvm-objcopy continue on encountering an error

Lets tools that use llvm-objcopy continue with working on files on
encountering an error by logging it instead of returning it early. This
lets tools like llvm-strip function as expected while processing
multiple files.

Author: meltq

llvm/tools/llvm-objcopy/llvm-objcopy.cpp

@@ -247,14 +247,17 @@ int llvm_objcopy_main(int argc, char **argv, const llvm::ToolContext &) {
                           WithColor::error(errs(), ToolName));
     return 1;
   }
+
+  int ret = 0;
+
   for (ConfigManager &ConfigMgr : DriverConfig->CopyConfigs) {
     assert(!ConfigMgr.Common.ErrorCallback);
     ConfigMgr.Common.ErrorCallback = reportWarning;
     if (Error E = executeObjcopy(ConfigMgr)) {
       logAllUnhandledErrors(std::move(E), WithColor::error(errs(), ToolName));
-      return 1;
+      ret = 1;
     }
   }
 
-  return 0;
+  return ret;
 }