Remove one UNSAFE_TODO() in CFX_Palette::CFX_Palette()

No code change required as a previous CL likely made this safe.

Bug: 42271176
Change-Id: Idd05cfd8883553c6c29d6db4597d25333ab84150
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/121992
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@google.com>
Commit-Queue: Tom Sepez <tsepez@chromium.org>
diff --git a/core/fxge/dib/cfx_dibbase.cpp b/core/fxge/dib/cfx_dibbase.cpp
index 9c7dbd5..caec786 100644
--- a/core/fxge/dib/cfx_dibbase.cpp
+++ b/core/fxge/dib/cfx_dibbase.cpp
@@ -81,13 +81,11 @@
   }
   // Move non-zeros to the front and count them
   for (uint32_t row = 0; row < m_Luts.size(); ++row) {
-    UNSAFE_TODO({
-      if (m_Luts[row].first != 0) {
-        m_Luts[m_lut].first = m_Luts[row].first;
-        m_Luts[m_lut].second = row;
-        ++m_lut;
-      }
-    });
+    if (m_Luts[row].first != 0) {
+      m_Luts[m_lut].first = m_Luts[row].first;
+      m_Luts[m_lut].second = row;
+      ++m_lut;
+    }
   }
   pdfium::span<LutsData> lut_span = pdfium::make_span(m_Luts).first(m_lut);
   std::sort(lut_span.begin(), lut_span.end(),