Update safe numerics package to get bitwise ops

core/fpdfapi/page/fpdf_page_func.cpp

Index: core/fpdfapi/page/fpdf_page_func.cpp
diff --git a/core/fpdfapi/page/fpdf_page_func.cpp b/core/fpdfapi/page/fpdf_page_func.cpp
index 672bfc02be8e83b95b43fa228ee24ef5dd58ae4f..9949e052c9bf1747c2d88e7df96c0adfd74f4ffc 100644
--- a/core/fpdfapi/page/fpdf_page_func.cpp
+++ b/core/fpdfapi/page/fpdf_page_func.cpp
@@ -574,10 +574,9 @@ bool CPDF_SampledFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const {
   if (!pSampleData)
     return false;
 
-  for (uint32_t j = 0; j < m_nOutputs; j++) {
+  for (uint32_t j = 0; j < m_nOutputs; j++, bitpos += m_nBitsPerSample) {
     uint32_t sample =
-        GetBits32(pSampleData, bitpos.ValueOrDie() + j * m_nBitsPerSample,
-                  m_nBitsPerSample);
+        GetBits32(pSampleData, bitpos.ValueOrDie(), m_nBitsPerSample);
     FX_FLOAT encoded = (FX_FLOAT)sample;
     for (uint32_t i = 0; i < m_nInputs; i++) {
       if (index[i] == m_EncodeInfo[i].sizes - 1) {