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libct: add a nil check for mountError
Signed-off-by: lifubang <lifubang@acmcoder.com>
(cherry picked from commit 0d0fd95731)
Signed-off-by: lifubang <lifubang@acmcoder.com>
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@@ -110,7 +110,7 @@ func (e *mountError) Error() string {
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if e.source != "" {
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out += "src=" + e.source + ", "
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if e.srcFile != nil {
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if e.srcFile != nil && e.srcFile.file != nil {
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out += "srcType=" + string(e.srcFile.Type) + ", "
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out += "srcFd=" + strconv.Itoa(int(e.srcFile.file.Fd())) + ", "
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}
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