Corrected debug message.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/render/pngfile.cc b/src/render/pngfile.cc
index 70833f3..09a5d95 100644
--- a/src/render/pngfile.cc
+++ b/src/render/pngfile.cc
@@ -144,7 +144,7 @@ void PNG::save(const char *filename, Image & image)
 	}
 
 	if (setjmp(png_jmpbuf(png_ptr))) {
-		con_warn << "Error reading " << filename << ": error during init_io!" << std::endl;
+		con_warn << "Error writing " << filename << ": error during init_io!" << std::endl;
 		fclose(png_file);
 		png_destroy_write_struct(&png_ptr, &info_ptr);
 		return;
@@ -175,8 +175,10 @@ void PNG::save(const char *filename, Image & image)
 
 	png_bytep row_pointers[image.height()];
 
-	for (size_t i = 0; i < image.height(); i++)
+	for (size_t i = 0; i < image.height(); i++) {
+		// image.operator[index] returns a pointer and not the data itself
 		row_pointers[i] = (png_bytep) image[i * image.width() * image.channels()];
+	}
 
 	png_write_image(png_ptr, row_pointers);