Remove UNSAFE_TODO() in CFGAS_GEGraphics::FillPathWithShading()

There's already a lot of branching, multiplication, function calls,
etc. per pixel, so using span indexing is not likely to be an issue.

Bug: 42271176
Change-Id: Iac528fe38189bc555d3cb8297a95479163bf0188
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/122853
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@google.com>
diff --git a/xfa/fgas/graphics/cfgas_gegraphics.cpp b/xfa/fgas/graphics/cfgas_gegraphics.cpp
index feb648c..64cc5d4 100644
--- a/xfa/fgas/graphics/cfgas_gegraphics.cpp
+++ b/xfa/fgas/graphics/cfgas_gegraphics.cpp
@@ -14,7 +14,6 @@
 #include <utility>
 
 #include "core/fxcrt/check.h"
-#include "core/fxcrt/compiler_specific.h"
 #include "core/fxcrt/fx_system.h"
 #include "core/fxcrt/span_util.h"
 #include "core/fxcrt/stl_util.h"
@@ -305,7 +304,7 @@
       float y_span = end_y - start_y;
       float axis_len_square = (x_span * x_span) + (y_span * y_span);
       for (int32_t row = 0; row < height; row++) {
-        uint32_t* dib_buf = bmp->GetWritableScanlineAs<uint32_t>(row).data();
+        auto dib_buf = bmp->GetWritableScanlineAs<uint32_t>(row);
         for (int32_t column = 0; column < width; column++) {
           float scale = 0.0f;
           if (axis_len_square) {
@@ -323,8 +322,7 @@
               scale = 1.0f;
             }
           }
-          UNSAFE_TODO(dib_buf[column]) =
-              m_info.fillColor.GetShading()->GetArgb(scale);
+          dib_buf[column] = m_info.fillColor.GetShading()->GetArgb(scale);
         }
       }
       result = true;
@@ -337,7 +335,7 @@
                 ((start_y - end_y) * (start_y - end_y)) -
                 ((start_r - end_r) * (start_r - end_r));
       for (int32_t row = 0; row < height; row++) {
-        uint32_t* dib_buf = bmp->GetWritableScanlineAs<uint32_t>(row).data();
+        auto dib_buf = bmp->GetWritableScanlineAs<uint32_t>(row);
         for (int32_t column = 0; column < width; column++) {
           float x = (float)(column);
           float y = (float)(row);
@@ -383,8 +381,7 @@
               continue;
             s = 1.0f;
           }
-          UNSAFE_TODO(dib_buf[column]) =
-              m_info.fillColor.GetShading()->GetArgb(s);
+          dib_buf[column] = m_info.fillColor.GetShading()->GetArgb(s);
         }
       }
       result = true;