Run clang-tidy’s modernize-use-nullptr pass.

This replaces all NULL or 0 with nullptr when assigned to or returned as
a pointer.

2 files changed, 10 insertions, 10 deletions

diff --git a/src/trace/potrace/bitmap.h b/src/trace/potrace/bitmap.h
index 7b5a94bb1..a47de24d0 100644
--- a/src/trace/potrace/bitmap.h
+++ b/src/trace/potrace/bitmap.h
@@ -63,12 +63,12 @@ static inline potrace_bitmap_t *bm_new(int w, int h) {
   /* check for overflow error */
   if (size < 0 || (h != 0 && dy != 0 && size / h / dy != BM_WORDSIZE)) {
     errno = ENOMEM;
-    return NULL;
+    return nullptr;
   }
 
   bm = (potrace_bitmap_t *) malloc(sizeof(potrace_bitmap_t));
   if (!bm) {
-    return NULL;
+    return nullptr;
   }
   bm->w = w;
   bm->h = h;
@@ -76,7 +76,7 @@ static inline potrace_bitmap_t *bm_new(int w, int h) {
   bm->map = (potrace_word *) malloc(size);
   if (!bm->map) {
     free(bm);
-    return NULL;
+    return nullptr;
   }
   return bm;
 }
@@ -94,7 +94,7 @@ static inline potrace_bitmap_t *bm_dup(const potrace_bitmap_t *bm) {
   potrace_bitmap_t *bm1 = bm_new(bm->w, bm->h);
   ptrdiff_t size = (ptrdiff_t)bm->dy * (ptrdiff_t)bm->h * (ptrdiff_t)BM_WORDSIZE;
   if (!bm1) {
-    return NULL;
+    return nullptr;
   }
   memcpy(bm1->map, bm->map, size);
   return bm1;
diff --git a/src/trace/potrace/inkscape-potrace.cpp b/src/trace/potrace/inkscape-potrace.cpp
index b438be248..86658653a 100644
--- a/src/trace/potrace/inkscape-potrace.cpp
+++ b/src/trace/potrace/inkscape-potrace.cpp
@@ -207,9 +207,9 @@ static long writePaths(PotraceTracingEngine *engine, potrace_path_t *plist,
 static GrayMap *filter(PotraceTracingEngine &engine, GdkPixbuf * pixbuf)
 {
     if (!pixbuf)
-        return NULL;
+        return nullptr;
 
-    GrayMap *newGm = NULL;
+    GrayMap *newGm = nullptr;
 
     /*### Color quantization -- banding ###*/
     if (engine.getTraceType() == TRACE_QUANT)
@@ -281,9 +281,9 @@ static GrayMap *filter(PotraceTracingEngine &engine, GdkPixbuf * pixbuf)
 static IndexedMap *filterIndexed(PotraceTracingEngine &engine, GdkPixbuf * pixbuf)
 {
     if (!pixbuf)
-        return NULL;
+        return nullptr;
 
-    IndexedMap *newGm = NULL;
+    IndexedMap *newGm = nullptr;
 
     RgbMap *gm = gdkPixbufToRgbMap(pixbuf);
     if (engine.getMultiScanSmooth())
@@ -326,7 +326,7 @@ PotraceTracingEngine::preview(Glib::RefPtr<Gdk::Pixbuf> thePixbuf)
         {
         IndexedMap *gm = filterIndexed(*this, pixbuf);
         if (!gm)
-            return Glib::RefPtr<Gdk::Pixbuf>(NULL);
+            return Glib::RefPtr<Gdk::Pixbuf>(nullptr);
 
         Glib::RefPtr<Gdk::Pixbuf> newBuf =
              Glib::wrap(indexedMapToGdkPixbuf(gm), false);
@@ -339,7 +339,7 @@ PotraceTracingEngine::preview(Glib::RefPtr<Gdk::Pixbuf> thePixbuf)
         {
         GrayMap *gm = filter(*this, pixbuf);
         if (!gm)
-            return Glib::RefPtr<Gdk::Pixbuf>(NULL);
+            return Glib::RefPtr<Gdk::Pixbuf>(nullptr);
 
         Glib::RefPtr<Gdk::Pixbuf> newBuf =
             Glib::wrap(grayMapToGdkPixbuf(gm), false);