Ticket #4073: fix-c++14-compat.patch

libraries/source/nvtt/src/src/nvimage/ImageIO.cpp

@@ -621 +621 @@
     png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
     if (png_ptr == NULL) {
     //  nvDebug( "*** LoadPNG: Error allocating read buffer in file '%s'.\n", name );
-        return false;
+        return NULL;
     }
 
     // Allocate/initialize a memory block for the image information
@@ -629 +629 @@
     if (info_ptr == NULL) {
         png_destroy_read_struct(&png_ptr, NULL, NULL);
     //  nvDebug( "*** LoadPNG: Error allocating image information for '%s'.\n", name );
-        return false;
+        return NULL;
     }
 
     // Set up the error handling
     if (setjmp(png_jmpbuf(png_ptr))) {
         png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
     //  nvDebug( "*** LoadPNG: Error reading png file '%s'.\n", name );
-        return false;
+        return NULL;
     }
 
     // Set up the I/O functions.