Merge pull request #1839 from bimbashrestha/named_pipes

Allowing named pipes to go through in zstdcli

programs/fileio.c

@@ -520,7 +520,7 @@ static FILE* FIO_openSrcFile(const char* srcFileName)
         return NULL;
     }
 
-    if (!UTIL_isRegularFile(srcFileName)) {
+    if (!UTIL_isRegularFile(srcFileName) && !UTIL_isFIFO(srcFileName)) {
         DISPLAYLEVEL(1, "zstd: %s is not a regular file -- ignored \n",
                         srcFileName);
         return NULL;