gdi32: Reject invalid values in SetMiterLimit().

dlls/gdi32/dc.c

@@ -1372,6 +1372,7 @@ BOOL WINAPI SetMiterLimit( HDC hdc, FLOAT limit, FLOAT *old_limit )
     DC_ATTR *dc_attr;
     if (!(dc_attr = get_dc_attr( hdc ))) return FALSE;
     if (dc_attr->emf && !EMFDC_SetMiterLimit( dc_attr, limit )) return 0;
+    if (limit < 1.0f) return FALSE;
     if (old_limit) *old_limit = dc_attr->miter_limit;
     dc_attr->miter_limit = limit;
     return TRUE;

dlls/gdi32/tests/dc.c

@@ -101,15 +101,12 @@ static void test_dc_values(void)
 
     limit = 456.0;
     ret = SetMiterLimit(hdc, 0.9f, &limit);
-    todo_wine
     ok(!ret, "Unexpected return value.\n");
-    todo_wine
     ok(limit == 456.0f, "Unexpected default miter limit %f.\n", limit);
 
     limit = 0.0;
     ret = SetMiterLimit(hdc, 1.0f, &limit);
     ok(ret, "Unexpected return value.\n");
-    todo_wine
     ok(limit == 10.0f, "Unexpected default miter limit %f.\n", limit);
 
     DeleteDC( hdc );