Actually use the argument in SetMaxDimUseZoom.

src/BitmapText.cpp

@@ -495,7 +495,7 @@ void BitmapText::SetMaxHeight( float fMaxHeight )
 
 void BitmapText::SetMaxDimUseZoom(bool use)
 {
-	m_MaxDimensionUsesZoom= true;
+	m_MaxDimensionUsesZoom= use;
 }
 
 void BitmapText::SetUppercase( bool b )

src/BitmapText.h

@@ -78,7 +78,7 @@ protected:
 	int			m_iWrapWidthPixels;		// -1 = no wrap
 	float		m_fMaxWidth;			// 0 = no max
 	float		m_fMaxHeight;			// 0 = no max
-	bool m_MaxDimensionUsesZoom;
+	bool		m_MaxDimensionUsesZoom;
 	bool		m_bRainbowScroll;
 	bool		m_bJitter;
 	bool		m_bUsingDistortion;