[Win32] Fix wrong line height in StyledText #2405

The line height in StyledText is currently too large when the
auto-scaled device zoom is larger than the native zoom. This for example
happens on a 175% primary monitor with `swt.autoScale=int200` or with a
fixed `swt.autoScale` value that is higher than the primary monitor
zoom. This was caused by a recent change that accidentally used the
auto-scaled zoom instead of the native zoom for retrieving a font handle
combined with the general usage of the ScalingSWTFontRegistry that, in
comparison to the previous fixed-zoom registry, now returns an
accordingly scaled handle.

This change adapts the font handle retrieval to properly pass the native
zoom instead of the auto-scaled zoom.

Fixes #2405

Author: HeikoKlare

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/TextLayout.java

@@ -2135,7 +2135,7 @@ public FontMetrics getLineMetrics (int lineIndex) {
 	long srcHdc = OS.CreateCompatibleDC(hDC);
 	TEXTMETRIC lptm = new TEXTMETRIC();
 	final int zoom = getZoom();
-	long availableFont = font != null ? SWTFontProvider.getFontHandle(font, zoom) : SWTFontProvider.getSystemFontHandle(device, zoom);
+	long availableFont = font != null ? SWTFontProvider.getFontHandle(font, nativeZoom) : SWTFontProvider.getSystemFontHandle(device, nativeZoom);
 	OS.SelectObject(srcHdc, availableFont);
 	metricsAdapter.GetTextMetrics(srcHdc, lptm);
 	OS.DeleteDC(srcHdc);