app-text/ghostscript-gpl-9.02 uses bundled jbig2dec instead of media-libs/jbig2dec. Proposed patch to fix it is attached. Reproducible: Always
Created attachment 278867 [details, diff] Patch to compile ghostscript-gpl-9.02 with external jbig2dec.
Hmm, diff -r shows that sorces slightly differ, in spite of equal package versions. Sorry.