Fix some cppcheck style issues

:Release Notes:
Made cppcheck less irritated by some style issues.

:Detailed Notes:
cppcheck diff:
[Src/BuildInfoHandler.cpp]: (style) The scope of the variable 'lp' can
    be reduced.
[Src/LocalePrefsHandler.cpp]: (style) The scope of the variable
    'found' can be reduced.
[Src/LocalePrefsHandler.cpp]: (style) The scope of the variable
    'found' can be reduced.
[Src/PrefsDb.cpp]: (style) Unused variable: ccnumber
[Src/PrefsDb.cpp]: (style) Unused variable: ccnumber
[Src/PrefsDb.cpp]: (style) Unused variable: ccnumber
[Src/PrefsDb.cpp]: (style) Unused variable: ccnumber
[Src/PrefsDb.cpp]: (style) Variable 'dbv' is assigned a value that is
    never used.
[Src/PrefsDb.cpp]: (style) Variable 'dbv' is assigned a value that is
    never used.
[Src/TimePrefsHandler.cpp]: (style) C-style pointer casting
[Src/TimePrefsHandler.cpp]: (style) C-style pointer casting
[Src/TimePrefsHandler.cpp]: (style) C-style pointer casting
[Src/TimePrefsHandler.cpp]: (style) C-style pointer casting
[Src/TimePrefsHandler.cpp]: (style) C-style pointer casting
[Src/TimePrefsHandler.cpp]: (style) C-style pointer casting
[Src/TimePrefsHandler.cpp]: (style) C-style pointer casting
[Src/TimePrefsHandler.cpp]: (style) C-style pointer casting
[Src/TimePrefsHandler.cpp]: (style) C-style pointer casting
[Src/TimePrefsHandler.cpp]: (style) C-style pointer casting
[Src/TimePrefsHandler.cpp]: (style) The scope of the variable
    'tzoneabbr_cstr' can be reduced.
[Src/TzParser.cpp]: (style) Variable 'isGmt' is assigned a value that
    is never used.
[Src/TzParser.cpp]: (style) Variable 'isStd' is assigned a value that
    is never used.
[Src/Utils.cpp]: (style) The scope of the variable 'j' can be reduced.
[Src/Utils.cpp]: (style) The scope of the variable 'j' can be reduced.
[Src/Utils.cpp]: (style) The scope of the variable 'success' can be
    reduced.
[Src/Utils.cpp]: (style) Variable 'success' is assigned a value that
    is never used.
[Src/WallpaperPrefsHandler.cpp]: (style) The scope of the variable
    'destHeight' can be reduced.
[Src/WallpaperPrefsHandler.cpp]: (style) The scope of the variable
    'destWidth' can be reduced.
[Src/WallpaperPrefsHandler.cpp]: (style) Unused variable: errorText
[Src/WallpaperPrefsHandler.cpp]: (style) Unused variable: result
[Src/WallpaperPrefsHandler.cpp]: (style) Variable 'destHeight' is
    assigned a value that is never used.
[Src/WallpaperPrefsHandler.cpp]: (style) Variable 'destWidth' is
    assigned a value that is never used.

:Testing Performed:
desktop build

:QA Notes:

:Issues Addressed:
[ANG-851] LSS: Investigate and fix issues detected by cppcheck

Open-webOS-DCO-1.0-Signed-off-by: Nikolay Orliuk <nikolay.orliuk@lge.com>

Change-Id: Icd9473e935b6a6fa5625e3925a594ec4c623b570
Reviewed-on: https://g2g.palm.com/4564
Reviewed-by: DCO Verification
Reviewed-by: Nikolay Orliuk <nikolay.orliuk@lge.com>
Tested-by: Nikolay Orliuk <nikolay.orliuk@lge.com>
Reviewed-by: Anatolii Sakhnik <anatolii.sakhnik@lge.com>