Fix memory leak in imagescale()

Author: smalyshev

NEWS

@@ -10,7 +10,7 @@ PHP                                                                        NEWS
   . Fixed bug #72135 (Integer Overflow in php_html_entities). (Stas)
 
 - GD:
-   . Fixed bug ##72227 (imagescale out-of-bounds read). (Stas)
+   . Fixed bug #72227 (imagescale out-of-bounds read). (Stas)
 
 - Intl:
    . Fixed bug #72241 (get_icu_value_internal out-of-bounds read). (Stas)

ext/gd/libgd/gd_interpolation.c

@@ -1070,12 +1070,12 @@ gdImagePtr gdImageScaleTwoPass(const gdImagePtr src, const unsigned int src_widt
 
 	dst = gdImageCreateTrueColor(new_width, new_height);
 	if (dst == NULL) {
-		gdFree(tmp_im);
+		gdImageDestroy(tmp_im);
 		return NULL;
 	}
 	gdImageSetInterpolationMethod(dst, src->interpolation_id);
 	_gdScaleVert(tmp_im, new_width, src_height, dst, new_width, new_height);
-	gdFree(tmp_im);
+	gdImageDestroy(tmp_im);
 
 	return dst;
 }
@@ -1093,7 +1093,7 @@ gdImagePtr Scale(const gdImagePtr src, const unsigned int src_width, const unsig
 	_gdScaleHoriz(src, src_width, src_height, tmp_im, new_width, src_height);
 	_gdScaleVert(tmp_im, new_width, src_height, dst, new_width, new_height);
 
-	gdFree(tmp_im);
+	gdImageDestroy(tmp_im);
 	return dst;
 }