Fixed one-of-many bug when scanning multiple files containing one-of-many signatures

src/binwalk/core/magic.py

@@ -430,6 +430,9 @@ class Magic(object):
         # Regex rule to find periods (see self._do_math)
         self.period = re.compile("\.")
 
+    def reset(self):
+        self.display_once = set()
+
     def _filtered(self, text):
         '''
         Tests if a string should be filtered out or not.

src/binwalk/modules/signature.py

@@ -134,6 +134,9 @@ class Signature(Module):
                 self.one_of_many = None
 
     def scan_file(self, fp):
+        self.one_of_many = None
+        self.magic.reset()
+
         while True:
             (data, dlen) = fp.read_block()
             if dlen < 1: