mutex.cpp: replace NULL by nullptr

1 files changed, 9 insertions, 9 deletions

diff --git a/src/mutex.cpp b/src/mutex.cpp
index da415e55..60ed5be1 100644
--- a/src/mutex.cpp
+++ b/src/mutex.cpp
@@ -184,7 +184,7 @@ void pj_cleanup_lock()
 
 #include <windows.h>
 
-static HANDLE mutex_lock = NULL;
+static HANDLE mutex_lock = nullptr;
 
 #if _WIN32_WINNT >= 0x0600
 
@@ -199,7 +199,7 @@ static BOOL CALLBACK pj_create_lock(PINIT_ONCE InitOnce,
     (void)InitOnce;
     (void)Parameter;
     (void)Context;
-    mutex_lock = CreateMutex( NULL, FALSE, NULL );
+    mutex_lock = CreateMutex( nullptr, FALSE, nullptr );
     return TRUE;
 }
 #endif
@@ -213,10 +213,10 @@ static void pj_init_lock()
 {
 #if _WIN32_WINNT >= 0x0600
     static INIT_ONCE sInitOnce = INIT_ONCE_STATIC_INIT;
-    InitOnceExecuteOnce( &sInitOnce, pj_create_lock, NULL, NULL );
+    InitOnceExecuteOnce( &sInitOnce, pj_create_lock, nullptr, nullptr );
 #else
-    if( mutex_lock == NULL )
-        mutex_lock = CreateMutex( NULL, FALSE, NULL );
+    if( mutex_lock == nullptr )
+        mutex_lock = CreateMutex( nullptr, FALSE, nullptr );
 #endif
 }
 
@@ -228,7 +228,7 @@ static void pj_init_lock()
 
 void pj_acquire_lock()
 {
-    if( mutex_lock == NULL )
+    if( mutex_lock == nullptr )
         pj_init_lock();
 
     WaitForSingleObject( mutex_lock, INFINITE );
@@ -242,7 +242,7 @@ void pj_acquire_lock()
 
 void pj_release_lock()
 {
-    if( mutex_lock == NULL )
+    if( mutex_lock == nullptr )
         pj_init_lock();
     else
         ReleaseMutex( mutex_lock );
@@ -253,10 +253,10 @@ void pj_release_lock()
 /************************************************************************/
 void pj_cleanup_lock()
 {
-    if( mutex_lock != NULL )
+    if( mutex_lock != nullptr )
     {
         CloseHandle( mutex_lock );
-        mutex_lock = NULL;
+        mutex_lock = nullptr;
     }
 }