Check for invalid rects in BRegion::Include() and Exclude(). This fixes

weird text selection in BTextView() (for example, when an empty line was 
part of the selection).



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24142 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/interface/Region.cpp

@@ -335,6 +335,9 @@ BRegion::Include(BRect rect)
 void
 BRegion::Include(clipping_rect rect)
 {
+	if (!valid_rect(rect))
+		return;
+		
 	// convert to internal rect format
 	rect.right ++;
 	rect.bottom ++;
@@ -381,6 +384,9 @@ BRegion::Exclude(BRect rect)
 void
 BRegion::Exclude(clipping_rect rect)
 {
+	if (!valid_rect(rect))
+		return;
+		
 	// convert to internal rect format
 	rect.right ++;
 	rect.bottom ++;