Fix another bunch of C4146 warnings

Author: ilya071294

src/burp/backup.epp

@@ -547,7 +547,7 @@ void compress(const UCHAR* data, ULONG length)
 	{
 		for (q = p + 2; q < end && (q[-2] != q[-1] || q[-1] != q[0]); q++)
 			;
-		ULONG run = (q < end) ? q - p - 2 : end - p;
+		SLONG run = (q < end) ? q - p - 2 : end - p;
 		if (run)
 		{
 			for (; run > 127; run -= 127)

src/dsql/WinNodes.cpp

@@ -432,7 +432,7 @@ void FirstValueWinNode::aggInit(thread_db* tdbb, Request* request) const
 
 dsc* FirstValueWinNode::winPass(thread_db* tdbb, Request* request, SlidingWindow* window) const
 {
-	if (!window->moveWithinFrame(-(window->getRecordPosition() - window->getFrameStart())))
+	if (!window->moveWithinFrame(-static_cast<SINT64>(window->getRecordPosition() - window->getFrameStart())))
 		return NULL;
 
 	dsc* desc = EVL_expr(tdbb, request, arg);
@@ -583,7 +583,7 @@ dsc* NthValueWinNode::winPass(thread_db* tdbb, Request* request, SlidingWindow*
 	const SLONG fromPos = desc ? MOV_get_long(tdbb, desc, 0) : FROM_FIRST;
 
 	if (fromPos == FROM_FIRST)
-		records += -(window->getRecordPosition() - window->getFrameStart()) - 1;
+		records += -static_cast<SINT64>(window->getRecordPosition() - window->getFrameStart()) - 1;
 	else
 		records = window->getFrameEnd() - window->getRecordPosition() - records + 1;