Remove dead code in GetCharPosList().

The `current_font` pointer is never null.

Change-Id: I02a3be9fad1599020d539fde66efd1c86882c49c
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/84851
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/core/fpdfapi/render/charposlist.cpp b/core/fpdfapi/render/charposlist.cpp
index 5b09f29..26df52c 100644
--- a/core/fpdfapi/render/charposlist.cpp
+++ b/core/fpdfapi/render/charposlist.cpp
@@ -94,8 +94,7 @@
         !current_font->GetSubstFont()->m_bFlagMM) {
       int pdf_glyph_width = font->GetCharWidthF(char_code);
       int font_glyph_width =
-          current_font ? current_font->GetGlyphWidth(text_char_pos.m_GlyphIndex)
-                       : 0;
+          current_font->GetGlyphWidth(text_char_pos.m_GlyphIndex);
       if (font_glyph_width && pdf_glyph_width > font_glyph_width + 1) {
         // Move the initial x position by half of the excess (transformed to
         // text space coordinates).