Enforcing use of nullZonePtr only for nulling out pointers, as it is useless for comparisons.

svn-id: r33384

3 files changed, 5 insertions, 5 deletions

diff --git a/engines/parallaction/exec_ns.cpp b/engines/parallaction/exec_ns.cpp
index fbfb462f9a..e01fdd9d0b 100644
--- a/engines/parallaction/exec_ns.cpp
+++ b/engines/parallaction/exec_ns.cpp
@@ -487,7 +487,7 @@ CommandExec_ns::~CommandExec_ns() {
 //
 
 void Parallaction::enterCommentMode(ZonePtr z) {
-	if (z == nullZonePtr) {
+	if (!z) {
 		return;
 	}
 
diff --git a/engines/parallaction/input.cpp b/engines/parallaction/input.cpp
index 0e6e135cc3..287618e803 100644
--- a/engines/parallaction/input.cpp
+++ b/engines/parallaction/input.cpp
@@ -187,7 +187,7 @@ void Input::trackMouse(ZonePtr z) {
 		return;
 	}
 
-	if (z == nullZonePtr) {
+	if (!z) {
 		return;
 	}
 
diff --git a/engines/parallaction/walk.cpp b/engines/parallaction/walk.cpp
index 14d8d080bd..bf8f423fd5 100644
--- a/engines/parallaction/walk.cpp
+++ b/engines/parallaction/walk.cpp
@@ -400,13 +400,13 @@ void PathBuilder_BR::buildPath(uint16 x, uint16 y) {
 
 	// look for short circuit cases
 	ZonePtr z0 = _vm->hitZone(kZonePath, x, y);
-	if (z0 == nullZonePtr) {
+	if (!z0) {
 		_ch->_walkPath.push_back(dest);
 		debugC(3, kDebugWalk, "buildPath: corner case 0");
 		return;
 	}
 	ZonePtr z1 = _vm->hitZone(kZonePath, foot.x, foot.y);
-	if (z1 == nullZonePtr || z1 == z0) {
+	if (!z1 || z1 == z0) {
 		_ch->_walkPath.push_back(dest);
 		debugC(3, kDebugWalk, "buildPath: corner case 1");
 		return;
@@ -444,7 +444,7 @@ void PathWalker_BR::finalizeWalk() {
 	_ch->getFoot(foot);
 
 	ZonePtr z = _vm->hitZone(kZoneDoor, foot.x, foot.y);
-	if (z != nullZonePtr && (z->_flags & kFlagsClosed) == 0) {
+	if (z && ((z->_flags & kFlagsClosed) == 0)) {
 		_vm->_location._startPosition = z->u.door->_startPos; // foot pos
 		_vm->_location._startFrame = z->u.door->_startFrame;