fix warnings

stepmania/src/BPMDisplay.cpp

@@ -92,7 +92,7 @@ void BPMDisplay::SetBPMRange( const DisplayBpms &bpms )
 
 	const vector<float> &BPMS = bpms.vfBpms;
 
-	if( BPMS.size() > MAX_COURSE_ENTRIES_BEFORE_VARIOUS )
+	if( (int) BPMS.size() > MAX_COURSE_ENTRIES_BEFORE_VARIOUS )
 	{
 		m_BPMS.push_back( -1 );
 		m_textBPM.SetText( "Various" );

stepmania/src/ScreenOptions.cpp

@@ -339,7 +339,7 @@ CString ScreenOptions::GetExplanationTitle( int iRow ) const
 				pTrail->GetDisplayBpms( bpms );
 			}
 
-			if( bpms.vfBpms.size() > MAX_COURSE_ENTRIES_BEFORE_VARIOUS )
+			if( (int) bpms.vfBpms.size() > MAX_COURSE_ENTRIES_BEFORE_VARIOUS )
 			{}	// add nothing
 			else if( bpms.IsSecret() )
 				sTitle += ssprintf( " (??" "?)" ); /* split so gcc doesn't think this is a trigraph */

stepmania/src/ScreenSelectMusic.cpp

@@ -1726,7 +1726,7 @@ void ScreenSelectMusic::AfterMusicChange()
 	// update stage counter display (long versions/marathons)
 	m_sprStage.Load( THEME->GetPathG(m_sName,"stage "+GAMESTATE->GetStageText()) );
 
-	if( m_Artists.size() > MAX_COURSE_ENTRIES_BEFORE_VARIOUS )
+	if( (int) m_Artists.size() > MAX_COURSE_ENTRIES_BEFORE_VARIOUS )
 	{
 		m_Artists.clear();
 		m_AltArtists.clear();