Fix strings tool calling wrt binary/executable targets (#3251)
Fix strings tool calling wrt binary/executable targets (#3251)

If only binary output is selected without the execution, strings would complain
about missing file.

Signed-off-by: Marc Poulhiès <3159a46716b78b3b6c7634a90e9d5898d5f4255e@kataplop.net>
mattgodbolt/compiler-explorer,mattgodbolt/compiler-explorer,mattgodbolt/compiler-explorer,mattgodbolt/compiler-explorer,mattgodbolt/compiler-explorer,mattgodbolt/compiler-explorer,mattgodbolt/compiler-explorer,mattgodbolt/compiler-explorer