Changed type of GetTicksPer(Line|Frame) to unsigned.

Avoids a GCC warning about comparing signed and unsigned values
in Source/Core/Core/Src/State.cpp.

Source/Core/Core/Src/HW/VideoInterface.cpp

@@ -759,7 +759,7 @@ void UpdateParameters()
     }
 }
 
-int GetTicksPerLine()
+unsigned GetTicksPerLine()
 {
 	if (s_lineCount == 0)
 	{
@@ -771,7 +771,7 @@ int GetTicksPerLine()
 	}
 }
 
-int GetTicksPerFrame()
+unsigned GetTicksPerFrame()
 {
 	return TicksPerFrame;
 }

Source/Core/Core/Src/HW/VideoInterface.h

@@ -357,8 +357,8 @@ union UVIDTVStatus
     // Change values pertaining to video mode
     void UpdateParameters();
 
-	int GetTicksPerLine();
-	int GetTicksPerFrame();
+	unsigned GetTicksPerLine();
+	unsigned GetTicksPerFrame();
 };
 
 #endif // _VIDEOINTERFACE_H