IsOff: Use the length for the string construction
No need to waste the calculation and force the string to call strlen again.
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@ -406,11 +406,12 @@ bool cmSystemTools::IsNOTFOUND(const char* val)
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bool cmSystemTools::IsOff(const char* val)
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{
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if (!val || strlen(val) == 0)
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if (!val || !*val)
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{
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return true;
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}
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std::basic_string<char> v = val;
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size_t len = val ? strlen(val) : 0;
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std::basic_string<char> v(val, len);
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for(std::basic_string<char>::iterator c = v.begin();
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c != v.end(); c++)
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