opts: Using the variable on range scope tc in function literal (sco…

…pelint)

```
opts/network_test.go:74:35: Using the variable on range scope `tc` in function literal (scopelint)
			assert.NilError(t, network.Set(tc.value))
			                               ^
opts/network_test.go:102:40: Using the variable on range scope `tc` in function literal (scopelint)
			assert.ErrorContains(t, network.Set(tc.value), tc.expectedError)
			                                    ^
opts/opts_test.go:270:30: Using the variable on range scope `tc` in function literal (scopelint)
			val, err := ValidateLabel(tc.value)
			                          ^
opts/opts_test.go:271:7: Using the variable on range scope `tc` in function literal (scopelint)
			if tc.expectedErr != "" {
			   ^
```

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

opts/network_test.go

@@ -69,6 +69,7 @@ func TestNetworkOptAdvancedSyntax(t *testing.T) {
 		},
 	}
 	for _, tc := range testCases {
+		tc := tc
 		t.Run(tc.value, func(t *testing.T) {
 			var network NetworkOpt
 			assert.NilError(t, network.Set(tc.value))
@@ -96,6 +97,7 @@ func TestNetworkOptAdvancedSyntaxInvalid(t *testing.T) {
 		},
 	}
 	for _, tc := range testCases {
+		tc := tc
 		t.Run(tc.value, func(t *testing.T) {
 			var network NetworkOpt
 			assert.ErrorContains(t, network.Set(tc.value), tc.expectedError)

opts/opts_test.go

@@ -266,6 +266,7 @@ func TestValidateLabel(t *testing.T) {
 	}
 
 	for _, tc := range tests {
+		tc := tc
 		t.Run(tc.name, func(t *testing.T) {
 			val, err := ValidateLabel(tc.value)
 			if tc.expectedErr != "" {