Revert "Fix #328: gdImageScale() with GD_WEIGHTED4 always returns NULL"

This reverts commit 0809c9f644.

src/gd_interpolation.c

@@ -2168,6 +2168,7 @@ BGD_DECLARE(int) gdImageSetInterpolationMethod(gdImagePtr im, gdInterpolationMet
 
 	switch (id) {
 		case GD_NEAREST_NEIGHBOUR:
+		case GD_WEIGHTED4:
 			im->interpolation = NULL;
 			break;
 

tests/gdimagescale/.gitignore

@@ -1,3 +1,2 @@
-/bug00328
 /github_bug_00218
 /bug_overflow_large_new_size

tests/gdimagescale/CMakeLists.txt

@@ -1,5 +1,4 @@
 LIST(APPEND TESTS_FILES
-	bug00328
 	github_bug_00218
 	bug_overflow_large_new_size
 )

tests/gdimagescale/Makemodule.am

@@ -1,6 +1,5 @@
 
 libgd_test_programs += \
-	gdimagescale/bug00328 \
 	gdimagescale/github_bug_00218 \
 	gdimagescale/bug_overflow_large_new_size
 

tests/gdimagescale/bug00328.c

@@ -1,27 +0,0 @@
-/**
- * Regression test for <https://github.com/libgd/libgd/issues/328>
- *
- * We're testing that a simple scale operation with GD_WEIGHTED4 succeeds.
- */
-
-
-#include "gd.h"
-#include "gdtest.h"
-
-
-int main()
-{
-	gdImagePtr src, dst;
-
-	src = gdImageCreateTrueColor(100, 100);
-	gdImageFilledRectangle(src, 0,0, 99,99, gdTrueColorAlpha(255, 255, 255, gdAlphaOpaque));
-
-	gdImageSetInterpolationMethod(src, GD_WEIGHTED4);
-	dst = gdImageScale(src, 200, 200);
-	gdTestAssertMsg(dst != NULL, "scaling failed");
-
-	gdImageDestroy(src);
-	gdImageDestroy(dst);
-
-	return gdNumFailures();
-}