fix warning (unreachable code), comment

stepmania/src/CryptHelpers.cpp

@@ -95,7 +95,6 @@ unsigned int RageFileStore::CopyRangeTo2(BufferedTransformation &target, unsigne
 			m_file.Seek( current );
 			return blockedBytes;
 		}
-		m_file.Seek( current );
 	}
 
 	// TODO: figure out what happens on cin

stepmania/src/CryptHelpers.h

@@ -33,7 +33,7 @@ public:
 private:
 	void StoreInitialize(const NameValuePairs &parameters);
 	
-	mutable RageFile m_file;	// mutable so that we can call RageFile::GetFileSize()
+	mutable RageFile m_file;	// mutable because reading from a file is not a const operation
 	byte *m_space;
 	unsigned int m_len;
 	bool m_waiting;