glu32: Return GLU_INVALID_ENUM for illegal pixel types.

dlls/glu32/mipmap.c

@@ -3448,10 +3448,10 @@ GLint WINAPI gluScaleImage( GLenum format, GLint widthin, GLint heightin, GLenum
 	return GLU_INVALID_ENUM;
     }
     if (!isLegalFormatForPackedPixelType(format, typein)) {
-       return GLU_INVALID_OPERATION;
+       return GLU_INVALID_ENUM;
     }
     if (!isLegalFormatForPackedPixelType(format, typeout)) {
-       return GLU_INVALID_OPERATION;
+       return GLU_INVALID_ENUM;
     }
     if (!wglGetCurrentContext()) {
        return GL_OUT_OF_MEMORY; /* windows returns this if no gl context (not glu error) */

dlls/glu32/tests/glu.c

@@ -72,14 +72,12 @@ static void test_gluScaleImage(HDC hdc, HGLRC hglrc)
                         DIMOUT, DIMOUT, ~0, bufout);
     ok(err == GLU_INVALID_ENUM, "got %x\n", err);
 
-    todo_wine {
     err = gluScaleImage(GL_RGBA, DIMIN, DIMIN, GL_UNSIGNED_BYTE_3_3_2, bufin,
                         DIMOUT, DIMOUT, GL_UNSIGNED_BYTE, bufout);
     ok(err == GLU_INVALID_ENUM, "got %x\n", err);
     err = gluScaleImage(GL_RGBA, DIMIN, DIMIN, GL_UNSIGNED_BYTE, bufin,
                         DIMOUT, DIMOUT, GL_UNSIGNED_BYTE_3_3_2, bufout);
     ok(err == GLU_INVALID_ENUM, "got %x\n", err);
-    }
 
     /* valid arguments */
     memset(bufout, 0, SIZEOUT);