Relax colorspace checks in CPDF_DIBSource::CreateDecoder().

core/fpdfapi/page/fpdf_page_colors.cpp

Index: core/fpdfapi/page/fpdf_page_colors.cpp
diff --git a/core/fpdfapi/page/fpdf_page_colors.cpp b/core/fpdfapi/page/fpdf_page_colors.cpp
index 455233abb57abc237c577ed18e8d7b492b654c87..69129e4f2b121d03a1547acc2905b11fd2f1cff4 100644
--- a/core/fpdfapi/page/fpdf_page_colors.cpp
+++ b/core/fpdfapi/page/fpdf_page_colors.cpp
@@ -21,6 +21,12 @@
 
 namespace {
 
+FX_FLOAT NormalizeChannel(FX_FLOAT fVal) {
+  return std::min(std::max(fVal, 0.0f), 1.0f);
+}
+
+}  // namespace
+
 uint32_t ComponentsForFamily(int family) {
   if (family == PDFCS_DEVICERGB)
     return 3;
@@ -30,12 +36,6 @@ uint32_t ComponentsForFamily(int family) {
   return 4;
 }
 
-FX_FLOAT NormalizeChannel(FX_FLOAT fVal) {
-  return std::min(std::max(fVal, 0.0f), 1.0f);
-}
-
-}  // namespace
-
 void sRGB_to_AdobeCMYK(FX_FLOAT R,
                        FX_FLOAT G,
                        FX_FLOAT B,