Make validate_archive more thorough

shard.lock

@@ -6,7 +6,7 @@ shards:
 
   archive:
     github: hkalexling/archive.cr
-    version: 0.1.0
+    version: 0.2.0
 
   baked_file_system:
     github: schovi/baked_file_system

src/archive.cr

@@ -50,4 +50,10 @@ class ArchiveFile
       e.read
     end
   end
+
+  def check
+    if @archive_file.is_a? Archive::File
+      @archive_file.as(Archive::File).check
+    end
+  end
 end

src/util.cr

@@ -87,6 +87,7 @@ end
 
 def validate_archive(path : String) : Exception?
   file = ArchiveFile.new path
+  file.check
   file.close
   return
 rescue e