fix: check pprof.StartCPUProfile error in --cpuprofile debug flag

golangci-lint (errcheck) flags the unchecked error; return it and close
the profile file if profiling cannot start.

Author: HYPERVAPOR

internal/cli/root.go

@@ -72,13 +72,20 @@ func NewRootCmd() *cobra.Command {
 			return err
 		}
 		profFile = f
-		pprof.StartCPUProfile(f)
+		if err := pprof.StartCPUProfile(f); err != nil {
+			_ = f.Close()
+			profFile = nil
+			return err
+		}
 		return nil
 	}
 	root.PersistentPostRunE = func(cmd *cobra.Command, args []string) error {
 		if profFile != nil {
 			pprof.StopCPUProfile()
-			profFile.Close()
+			if err := profFile.Close(); err != nil {
+				profFile = nil
+				return err
+			}
 			profFile = nil
 		}
 		return nil