fix: prevent reinitialize error at getFlags #131
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This PR tries to fix a variable shadowing problem and format the copier_test.go file.
The
copierfunction declares a returned variable err, which saves the trouble of initializing inside the body.func copier(toValue interface{}, fromValue interface{}, opt Option) (err error)But then the err variable would be shadowed by the returned error of getFlags function ( line 235), which makes it impossible to return the error message from
checkBitFlags(flgs.BitFlags)function call (line 370).From a caller's perspective, even if a "must,nopanic" tag was set, no error will be returned. This PR would fix the problem and provide the corresponding test case in copier_tags_test.go (TestCopyTagMustNoPanic).