ProcessController: Fix return type of UpdateSituation.

fWriteMemory is an int64.

src/apps/processcontroller/MemoryBarMenu.cpp

@@ -86,7 +86,7 @@ MemoryBarMenu::Pulse()
 	MemoryBarMenuItem* item;
 	int	total = 0;
 	for (k = 1; (item = (MemoryBarMenuItem*)ItemAt(k)) != NULL; k++) {
-		int m = item->UpdateSituation(committedMemory);
+		int64 m = item->UpdateSituation(committedMemory);
 		if (m < 0) {
 			if (lastRecycle == fRecycleCount) {
 				fRecycleCount += EXTRA;

src/apps/processcontroller/MemoryBarMenuItem.cpp

@@ -200,7 +200,7 @@ MemoryBarMenuItem::GetContentSize(float* _width, float* _height)
 }
 
 
-int
+int64
 MemoryBarMenuItem::UpdateSituation(int64 committedMemory)
 {
 	fCommittedMemory = committedMemory;

src/apps/processcontroller/MemoryBarMenuItem.h

@@ -19,7 +19,7 @@ class MemoryBarMenuItem : public IconMenuItem {
 		virtual	void	GetContentSize(float* _width, float* _height);
 
 		void			DrawBar(bool force);
-		int				UpdateSituation(int64 committedMemory);
+		int64			UpdateSituation(int64 committedMemory);
 		void			BarUpdate();
 		void			Init();
 		void			Reset(char* name, team_id team, BBitmap* icon, bool deleteIcon);