Call rpmReadConfigFiles() in rpm2cpio so that rpm2cpio won't complain like:

warning: Unknown system: (null)
warning: Please contact rpm-maint@lists.rpm.org

1 files changed, 1 insertions, 0 deletions

diff --git a/rpm2cpio.c b/rpm2cpio.c
index 05ff8e9d3..164a61f64 100644
--- a/rpm2cpio.c
+++ b/rpm2cpio.c
@@ -32,6 +32,7 @@ int main(int argc, char *argv[])
 	exit(EXIT_FAILURE);
     }
     fdo = fdDup(STDOUT_FILENO);
+    rpmReadConfigFiles(NULL, NULL);
 
     {	rpmts ts = rpmtsCreate();
 	rpmVSFlags vsflags = 0;