Fix ~,! typo when clearing kRenderTarget flag

TBR=brucedawson@chromium.org,robertphillips@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1727413004

Review URL: https://codereview.chromium.org/1727413004 .
diff --git a/src/image/SkSurface_Gpu.cpp b/src/image/SkSurface_Gpu.cpp
index 5eca56e..d154463 100644
--- a/src/image/SkSurface_Gpu.cpp
+++ b/src/image/SkSurface_Gpu.cpp
@@ -86,7 +86,7 @@
     if (kYes_ForceCopyMode == forceCopyMode || !tex) {
         GrSurfaceDesc desc = fDevice->accessRenderTarget()->desc();
         GrContext* ctx = fDevice->context();
-        desc.fFlags = desc.fFlags & !kRenderTarget_GrSurfaceFlag;
+        desc.fFlags = desc.fFlags & ~kRenderTarget_GrSurfaceFlag;
         copy.reset(ctx->textureProvider()->createTexture(desc, kYes_Budgeted == budgeted));
         if (!copy) {
             return nullptr;