refactor(make): apply suggestions from code review

Co-authored-by: Ville Skyttä <[email protected]>

Author: akinomyoga

completions/make

@@ -139,7 +139,7 @@ _make()
                 local ret
                 _comp_dequote "${words[i + 1]-}" &&
                     [[ -d ${ret-} ]] &&
-                    makef_dir=(-C "${ret-}")
+                    makef_dir=(-C "$ret")
                 break
             fi
         done
@@ -152,7 +152,7 @@ _make()
                 local ret
                 _comp_dequote "${words[i + 1]-}" &&
                     [[ -f ${ret-} ]] &&
-                    makef=(-f "${ret-}")
+                    makef=(-f "$ret")
                 break
             fi
         done