checkPanFrames: don't clobber mapped state

When checking to see what needs to be done with pan frames, the check to
see whether the desktop is in global mode or not, would always force
certain panframes to be unmapped, even if we shouldn't.

Fixes #543

fvwm/virtual.c

@@ -1083,6 +1083,18 @@ void checkPanFrames(struct monitor *m)
 		do_unmap_b = true;
 	}
 
+	/* Remove panframes if in global mode and on inside edge */
+	if (global) {
+		if (m->edge.left)
+			do_unmap_l = true;
+		if (m->edge.right)
+			do_unmap_r = true;
+		if (m->edge.bottom)
+			do_unmap_b = true;
+		if (m->edge.top)
+			do_unmap_t = true;
+	}
+
 	/* correct the unmap variables if pan frame commands are set */
 	if (edge_thickness != 0) {
 		if (m->PanFrameLeft.command != NULL ||
@@ -1102,17 +1114,6 @@ void checkPanFrames(struct monitor *m)
 			do_unmap_t = false;
 		}
 	}
-	/* Remove panframes if in global mode and on inside edge */
-	if (global) {
-		if (m->edge.left)
-			do_unmap_l = true;
-		if (m->edge.right)
-			do_unmap_r = true;
-		if (m->edge.bottom)
-			do_unmap_b = true;
-		if (m->edge.top)
-			do_unmap_t = true;
-	}
 
 	/*
 	 * hide or show the windows