Simplify CPDF_StreamContentParser::Handle_SetFont()

There's extra work being done that's not necessary. This should have
been part of https://pdfium-review.googlesource.com/61590.

Change-Id: I96bd59ece06b6b5a8a041160e37b8d9df83921f3
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/104411
Auto-Submit: Lei Zhang <thestig@chromium.org>
Commit-Queue: K. Moon <kmoon@chromium.org>
Reviewed-by: K. Moon <kmoon@chromium.org>
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.cpp b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
index 56603a3..457e75b 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.cpp
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
@@ -1110,13 +1110,7 @@
 }
 
 void CPDF_StreamContentParser::Handle_SetFont() {
-  float fs = GetNumber(0);
-  if (fs == 0) {
-    constexpr float kDefaultFontSize = 0.0f;
-    fs = kDefaultFontSize;
-  }
-
-  m_pCurStates->m_TextState.SetFontSize(fs);
+  m_pCurStates->m_TextState.SetFontSize(GetNumber(0));
   RetainPtr<CPDF_Font> pFont = FindFont(GetString(1));
   if (pFont)
     m_pCurStates->m_TextState.SetFont(std::move(pFont));