Updated CPIO plugin to not recurse into extracted directories when --matryoshka is enabled

src/binwalk/plugins/cpio.py

@@ -16,7 +16,8 @@ class CPIOPlugin(binwalk.core.plugin.Plugin):
         if self.module.extractor.enabled:
             self.module.extractor.add_rule(regex="^ascii cpio archive",
                                            extension="cpio",
-                                           cmd=self.extractor)
+                                           cmd=self.extractor,
+                                           recurse=False)       # Most CPIO archives are file systems, so don't recurse into the extracted contents
 
     def extractor(self, fname):
         result = None