Replace NULL/0 with nullptr

Fixes -Wzero-as-null-pointer-constant warning.

clang-tidy -checks=modernize-use-nullptr -p compile_commands.json -fix ...

Test: m
Bug: 68236239
Change-Id: I3a8e982ba40f9b029bafef78437b146a878f56a9
Merged-In: I3a8e982ba40f9b029bafef78437b146a878f56a9
(cherry picked from commit 48a619f8332e06ea1cd96d82719cdf5e05c69630)
diff --git a/libs/gui/StreamSplitter.cpp b/libs/gui/StreamSplitter.cpp
index 52c9067..2f8e104 100644
--- a/libs/gui/StreamSplitter.cpp
+++ b/libs/gui/StreamSplitter.cpp
@@ -38,11 +38,11 @@
 status_t StreamSplitter::createSplitter(
         const sp<IGraphicBufferConsumer>& inputQueue,
         sp<StreamSplitter>* outSplitter) {
-    if (inputQueue == NULL) {
+    if (inputQueue == nullptr) {
         ALOGE("createSplitter: inputQueue must not be NULL");
         return BAD_VALUE;
     }
-    if (outSplitter == NULL) {
+    if (outSplitter == nullptr) {
         ALOGE("createSplitter: outSplitter must not be NULL");
         return BAD_VALUE;
     }
@@ -74,7 +74,7 @@
 
 status_t StreamSplitter::addOutput(
         const sp<IGraphicBufferProducer>& outputQueue) {
-    if (outputQueue == NULL) {
+    if (outputQueue == nullptr) {
         ALOGE("addOutput: outputQueue must not be NULL");
         return BAD_VALUE;
     }