Fix a few signed unsigned mismatches

indra/newview/aihttpview.cpp

@@ -291,7 +291,7 @@ AIHTTPView::~AIHTTPView()
   mGLHTTPHeaderBar = NULL;
 }
 
-U32 AIHTTPView::updateColumn(int col, U32 start)
+U32 AIHTTPView::updateColumn(U32 col, U32 start)
 {
   if (col > mStartColumn.size())
   {

indra/newview/aihttpview.h

@@ -52,7 +52,7 @@ class AIHTTPView : public LLContainerView
 	/*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
 	/*virtual*/ BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent);
 
-	U32 updateColumn(int col, U32 start);
+	U32 updateColumn(U32 col, U32 start);
 	void setWidth(S32 width) { mWidth = width; }
 
   private:

indra/newview/lllogchat.cpp

@@ -153,7 +153,7 @@ void LLLogChat::loadHistory(std::string const& filename , void (*callback)(ELogL
 
 		char buffer[LOG_RECALL_BUFSIZ];
 		bool error = false;
-		int nlines = 0;
+		U32 nlines = 0;
 		while (pos > 0 && nlines < lines)
 		{
 			// Read the LOG_RECALL_BUFSIZ characters before pos.