[Harbour] Warnings

[Enrico Maria Giordano]

Warning W8084 ../../gtwvg.c 2369: Suggest parentheses to clarify precedence 
in function hb_gt_wvt_CreateWindow

./../regexrpl.prg(96) Warning W0032  Variable 'NEND' is assigned but not 
used in function 'HB_REGEXREPLACE(0)'

EMG

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