assigning readonly separate from the var assignment

https://www.shellcheck.net/

| ./git_sync.sh:214:10: warning: Declare and assign separately to avoid masking return values. [SC2155]
| ./git_sync.sh:218:10: warning: Declare and assign separately to avoid masking return values. [SC2155]
| ./git_sync.sh:220:10: warning: Declare and assign separately to avoid masking return values. [SC2155]

Author: MacDada

git_sync.sh

@@ -211,13 +211,16 @@ print_info "\nDetected default branch: \"${default_branch}\"."
 
 print_and_run git status
 
-readonly original_stashes_count=$(count_stashes)
+original_stashes_count=$(count_stashes)
+readonly original_stashes_count
 
 print_and_run git stash
 
-readonly stashes_count_after_stash=$(count_stashes)
+stashes_count_after_stash=$(count_stashes)
+readonly stashes_count_after_stash
 
-readonly original_branch=$(git branch --show-current)
+original_branch=$(git branch --show-current)
+readonly original_branch
 
 print_and_run git checkout "${default_branch}"