FCFGMerge: Close files - silence warning
FCFGMerge: Close files - silence warning

Happens on Windows with --enable-debug and --enable-dbgutil

C:/cygwin/libo/core/filter/source/config/tools/merge/pyAltFCFGMerge:574:
ResourceWarning: unclosed file <_io.BufferedReader
name='C:/cygwin/libo/core/filter/source/config/fragments/filters/..\\filters\\calc
aFragmentFile = codecs.open(sFragPath, "r", "utf-8")

C:/cygwin/libo/core/filter/source/config/tools/merge/pyAltFCFGMerge:293:
ResourceWarning: unclosed file <_io.BufferedWriter
name='C:/cygwin/libo/build/workdir/wntmsci14/XcuFilterFiltersTarget/fcfg_drawgraph
aMerger.merge()

Change-Id: I60981ad366e579748e3507c9f81c74b8b902867b

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core