fix a few linux compilation warnings

core/src/fxge/ge/fx_ge_linux.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
  
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../../include/fxge/fx_ge.h"
 #include "../agg/include/fx_agg_driver.h"
 #include "text_int.h"
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_LINUX_
@@ skipping 145 matching lines @@
             break;
     }
     return 0;
 }
 static FX_INT32 _LinuxGetSimilarValue(int weight, FX_BOOL bItalic, int pitch_family, FX_DWORD style)
 {
     FX_INT32 iSimilarValue = 0;
     if ((style & FXFONT_BOLD) == (weight > 400)) {
         iSimilarValue += 16;
     }
+    // TODO(tsepez): File BUG since 0x40 & x is never 1, for instance.
     if ((style & FXFONT_ITALIC) == bItalic) {

[jun_fang, 2015/01/17 00:39:17]

it shall be changed to if ((style & FXFONT_ITALIC) && bItalic)

         iSimilarValue += 16;
     }
     if ((style & FXFONT_SERIF) == (pitch_family & FXFONT_FF_ROMAN)) {
         iSimilarValue += 16;
     }
     if ((style & FXFONT_SCRIPT) == (pitch_family & FXFONT_FF_SCRIPT)) {
         iSimilarValue += 8;
     }
     if ((style & FXFONT_FIXED_PITCH) == (pitch_family & FXFONT_FF_FIXEDPITCH)) {
         iSimilarValue += 8;
@@ skipping 48 matching lines @@
     return FALSE;
 }
 void CFX_GEModule::InitPlatform()
 {
     m_pFontMgr->SetSystemFontInfo(IFX_SystemFontInfo::CreateDefault());
 }
 void CFX_GEModule::DestroyPlatform()
 {
 }
 #endif