glu32: Return GL_OUT_OF_MEMORY from gluScaleImage if no context.

dlls/glu32/mipmap.c

@@ -37,6 +37,7 @@
 
 #include "windef.h"
 #include "winbase.h"
+#include "wingdi.h"
 #include "wine/wgl.h"
 #include "wine/glu.h"
 
@@ -3452,6 +3453,10 @@ GLint WINAPI gluScaleImage( GLenum format, GLint widthin, GLint heightin, GLenum
     if (!isLegalFormatForPackedPixelType(format, typeout)) {
        return GLU_INVALID_OPERATION;
     }
+    if (!wglGetCurrentContext()) {
+       return GL_OUT_OF_MEMORY; /* windows returns this if no gl context (not glu error) */
+    }
+
     beforeImage =
 	HeapAlloc(GetProcessHeap(), 0, image_size(widthin, heightin, format, GL_UNSIGNED_SHORT));
     afterImage =

dlls/glu32/tests/glu.c

@@ -40,12 +40,9 @@ static void test_gluScaleImage(HDC hdc, HGLRC hglrc)
     /* test without any context */
     wglMakeCurrent(hdc, 0);
 
-    /* test crashes on Wine */
-    if (!winetest_platform_is_wine) {
     err = gluScaleImage(GL_RGBA, DIMIN, DIMIN, GL_UNSIGNED_BYTE, bufin,
                         DIMOUT, DIMOUT, GL_UNSIGNED_BYTE, bufout);
     ok(err == GL_OUT_OF_MEMORY, "got %x\n", err);
-    }
 
     /* test with context */
     wglMakeCurrent(hdc, hglrc);