game: fixed a format string vulnerability in CDebugOverlay::Paint (ValveSoftware/source-sdk-2013#372)

game/client/vgui_debugoverlaypanel.cpp

@@ -129,7 +129,7 @@ void CDebugOverlay::Paint()
 				{
 					float xPos		= screenPos[0];
 					float yPos		= screenPos[1]+ (pCurrText->lineOffset*13); // Line spacing;
-					g_pMatSystemSurface->DrawColoredText( m_hFont, xPos, yPos, r, g, b, a, pCurrText->text );
+					g_pMatSystemSurface->DrawColoredText( m_hFont, xPos, yPos, r, g, b, a, "%s", pCurrText->text );
 				}
 			}
 			else
@@ -138,7 +138,7 @@ void CDebugOverlay::Paint()
 				{
 					float xPos		= screenPos[0];
 					float yPos		= screenPos[1]+ (pCurrText->lineOffset*13); // Line spacing;
-					g_pMatSystemSurface->DrawColoredText( m_hFont, xPos, yPos, r, g, b, a, pCurrText->text );
+					g_pMatSystemSurface->DrawColoredText( m_hFont, xPos, yPos, r, g, b, a, "%s", pCurrText->text );
 				}
 			}
 		}