Improved CramFS fals positive detection

src/binwalk/magic/filesystems

@@ -100,6 +100,7 @@
 >40     lelong      <1              invalid blocks,{invalid}
 >40     ulelong     x               %u blocks,
 >44     lelong      <1              invalid file count,{invalid}
+>44     lelong      >1000000        invalid file count,{invalid}
 >44     ulelong     x               %u files
 >4      ulelong     x               {jump:%u}
 >4      ulelong     x               {size:%u}
@@ -117,6 +118,7 @@
 >40     belong      <1              invalid blocks,{invalid}
 >40     ubelong     x               %u blocks,
 >44     belong      <1              invalid file count,{invalid}
+>44     belong      >1000000        invalid file count,{invalid}
 >44     ubelong     x               %u files
 >4      ubelong     x               {jump:%u}
 >4      ubelong     x               {size:%u}