Patch for bulk_extractor to prevent hanging when encountering a FIFO pipe.

bulk_extractor_fifo.patch

diff -Naur bulk_extractor/src/dig.cpp bulk_extractor_patch/src/dig.cpp
--- bulk_extractor/src/dig.cpp  2013-12-16 19:26:03.800142268 -0500
+++ bulk_extractor_patch/src/dig.cpp    2013-12-16 19:59:57.636177687 -0500
@@ -163,6 +163,9 @@
        if(stat(pathname.c_str(),&st)){
            continue;                   // can't stat it
        }
+       if(S_ISFIFO(st.st_mode)) {
+           continue;                   // we have a FIFO pipe; don't process it
+       }
 #endif
        dig::const_iterator::devinode di(st.st_dev,st.st_ino);