Fixed findings

List of Findings

Error: SHELLCHECK_WARNING: [#def1]
/usr/bin/dpkg-realpath:56:3: warning[SC3043]: In POSIX sh, 'local' is undefined.
#   54|   
#   55|   canonicalize() {
#   56|->   local src="$1"
#   57|     local root="$DPKG_ROOT"
#   58|     local loop=0

Error: SHELLCHECK_WARNING: [#def2]
/usr/bin/dpkg-realpath:57:3: warning[SC3043]: In POSIX sh, 'local' is undefined.
#   55|   canonicalize() {
#   56|     local src="$1"
#   57|->   local root="$DPKG_ROOT"
#   58|     local loop=0
#   59|     local result="$root"

Error: SHELLCHECK_WARNING: [#def3]
/usr/bin/dpkg-realpath:58:3: warning[SC3043]: In POSIX sh, 'local' is undefined.
#   56|     local src="$1"
#   57|     local root="$DPKG_ROOT"
#   58|->   local loop=0
#   59|     local result="$root"
#   60|     local dst

Error: SHELLCHECK_WARNING: [#def4]
/usr/bin/dpkg-realpath:59:3: warning[SC3043]: In POSIX sh, 'local' is undefined.
#   57|     local root="$DPKG_ROOT"
#   58|     local loop=0
#   59|->   local result="$root"
#   60|     local dst
#   61|   

Error: SHELLCHECK_WARNING: [#def5]
/usr/bin/dpkg-realpath:60:3: warning[SC3043]: In POSIX sh, 'local' is undefined.
#   58|     local loop=0
#   59|     local result="$root"
#   60|->   local dst
#   61|   
#   62|     # Check whether the path is relative and make it absolute otherwise.

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