fix: lint go code

Author: JuArce

operator/merkle_tree/merkle_tree.go

@@ -22,7 +22,7 @@ func VerifyMerkleTreeBatch(batchBuffer []byte, merkleRootBuffer [32]byte) (isVer
 	defer func() {
 		rec := recover()
 		if rec != nil {
-			err = fmt.Errorf("Panic was caught while verifying merkle tree batch: %s", rec)
+			err = fmt.Errorf("panic was caught while verifying merkle tree batch: %s", rec)
 		}
 	}()
 
@@ -32,7 +32,7 @@ func VerifyMerkleTreeBatch(batchBuffer []byte, merkleRootBuffer [32]byte) (isVer
 	r := (C.int32_t)(C.verify_merkle_tree_batch_ffi(batchPtr, (C.uint)(len(batchBuffer)), merkleRootPtr))
 
 	if r == -1 {
-		err = fmt.Errorf("Panic happened on FFI while verifying merkle tree batch")
+		err = fmt.Errorf("panic happened on FFI while verifying merkle tree batch")
 		return isVerified, err
 	}
 

operator/sp1/sp1.go

@@ -24,7 +24,7 @@ func VerifySp1Proof(proofBuffer []byte, elfBuffer []byte) (isVerified bool, err
 	defer func() {
 		rec := recover()
 		if rec != nil {
-			err = fmt.Errorf("Panic was caught while verifying sp1 proof: %s", rec)
+			err = fmt.Errorf("panic was caught while verifying sp1 proof: %s", rec)
 		}
 	}()
 
@@ -34,7 +34,7 @@ func VerifySp1Proof(proofBuffer []byte, elfBuffer []byte) (isVerified bool, err
 	r := (C.int32_t)(C.verify_sp1_proof_ffi(proofPtr, (C.uint32_t)(len(proofBuffer)), elfPtr, (C.uint32_t)(len(elfBuffer))))
 
 	if r == -1 {
-		err = fmt.Errorf("Panic happened on FFI while verifying sp1 proof")
+		err = fmt.Errorf("panic happened on FFI while verifying sp1 proof")
 		return isVerified, err
 	}
 

scripts/test_files/gnark_groth16_bn254_script/main.go

@@ -49,9 +49,9 @@ func main() {
 	//	r1cs := ccs.(*cs.SparseR1CS)
 	// as srs is not used in the setup, we can remove it
 	//	srs, err := test.NewKZGSRS(r1cs)
-	if err != nil {
-		panic("KZG setup error")
-	}
+	//if err != nil {
+	//	panic("KZG setup error")
+	//}
 
 	// no need to use srs in the setup
 	pk, vk, _ := groth16.Setup(ccs)

scripts/test_files/gnark_plonk_bn254_script/main.go

@@ -96,9 +96,24 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
-	defer proofFile.Close()
-	defer vkFile.Close()
-	defer witnessFile.Close()
+	defer func(proofFile *os.File) {
+		err := proofFile.Close()
+		if err != nil {
+			log.Fatal("could not close proof file:", err)
+		}
+	}(proofFile)
+	defer func(vkFile *os.File) {
+		err := vkFile.Close()
+		if err != nil {
+			log.Fatal("could not close verification key file:", err)
+		}
+	}(vkFile)
+	defer func(witnessFile *os.File) {
+		err := witnessFile.Close()
+		if err != nil {
+			log.Fatal("could not close witness file:", err)
+		}
+	}(witnessFile)
 
 	_, err = proof.WriteTo(proofFile)
 	if err != nil {