Removed nil from error initialization in GIDTokenClaimsInternalOptionsTest

Author: AkshatG6

GoogleSignIn/Sources/GIDJSONSerializer/Implementation/GIDJSONSerializerImpl.m

@@ -25,7 +25,7 @@ @implementation GIDJSONSerializerImpl
 
 - (nullable NSString *)stringWithJSONObject:(NSDictionary<NSString *, id> *)jsonObject
                                       error:(NSError *_Nullable *_Nullable)error {
-  NSError *serializationError = nil;
+  NSError *serializationError;
   NSData *jsonData = [NSJSONSerialization dataWithJSONObject:jsonObject
                                                      options:0
                                                        error:&serializationError];

GoogleSignIn/Tests/Unit/GIDTokenClaimsInternalOptionsTest.m

@@ -55,7 +55,7 @@ - (void)testValidatedJSONStringForClaims_WithEmptyInput_ShouldReturnNil {
 
 - (void)testValidatedJSONStringForClaims_WithNonEssentialClaim_IsCorrectlyFormatted {
   NSSet *claims = [NSSet setWithObject:[GIDTokenClaim authTimeClaim]];
-  NSError *error = nil;
+  NSError *error;
   NSString *result = [_tokenClaimsInternalOptions validatedJSONStringForClaims:claims error:&error];
 
   XCTAssertNil(error);
@@ -64,7 +64,7 @@ - (void)testValidatedJSONStringForClaims_WithNonEssentialClaim_IsCorrectlyFormat
 
 - (void)testValidatedJSONStringForClaims_WithEssentialClaim_IsCorrectlyFormatted {
   NSSet *claims = [NSSet setWithObject:[GIDTokenClaim essentialAuthTimeClaim]];
-  NSError *error = nil;
+  NSError *error;
   NSString *result = [_tokenClaimsInternalOptions validatedJSONStringForClaims:claims error:&error];
 
   XCTAssertNil(error);
@@ -91,7 +91,7 @@ - (void)testValidatedJSONStringForClaims_WhenSerializationFails_ReturnsNilAndErr
   NSSet *claims = [NSSet setWithObject:[GIDTokenClaim authTimeClaim]];
   NSError *expectedJSONError = [NSError errorWithDomain:@"com.fake.json" code:-999 userInfo:nil];
   _jsonSerializerFake.errorToReturn = expectedJSONError;
-  NSError *actualError = nil;
+  NSError *actualError;
   NSString *result =
   [_tokenClaimsInternalOptions validatedJSONStringForClaims:claims error:&actualError];