lint: Fix SC2155 violations

Author: ixti

share/ruby-install/checksums.sh

@@ -30,7 +30,8 @@ function lookup_checksum()
 		return 1
 	fi
 
-	local output="$(grep "  $file" "$checksums")"
+	local output
+	output="$(grep "  $file" "$checksums")"
 
 	echo -n "${output%% *}"
 }
@@ -55,7 +56,8 @@ function compute_checksum()
 	fi
 
 	debug "$program $file"
-	local output="$($program "$file")"
+	local output
+	output="$($program "$file")"
 
 	echo -n "${output%% *}"
 }
@@ -71,7 +73,8 @@ function verify_checksum()
 		return
 	fi
 
-	local actual_checksum="$(compute_checksum "$algorithm" "$file")"
+	local actual_checksum
+	actual_checksum="$(compute_checksum "$algorithm" "$file")"
 
 	if [[ "$actual_checksum" != "$expected_checksum" ]]; then
 		error "Invalid $algorithm checksum for $file"

share/ruby-install/package_manager.sh

@@ -29,7 +29,8 @@ function install_packages()
 			run $sudo pkg install -y "$@" || return $?
 			;;
 		brew)
-			local brew_owner="$(/usr/bin/stat -f %Su "$(command -v brew)")"
+			local brew_owner=
+			brew_owner="$(/usr/bin/stat -f %Su "$(command -v brew)")"
 			local brew_sudo=""
 
 			if [[ "$brew_owner" != "$(id -un)" ]]; then

share/ruby-install/ruby-install.sh

@@ -272,7 +272,8 @@ function init()
 		return 1
 	fi
 
-	local fully_qualified_version="$(lookup_ruby_version "$ruby" "$ruby_version")"
+	local fully_qualified_version
+	fully_qualified_version="$(lookup_ruby_version "$ruby" "$ruby_version")"
 
 	if [[ -n "$fully_qualified_version" ]]; then
 		ruby_version="$fully_qualified_version"