Make one function

Library/Homebrew/extend/os/mac/keg.rb

@@ -64,14 +64,11 @@ class Keg
   end
 
   def dsymutil
-    binary_executable_or_library_files.each { |file| dsymutil_binary(file) }
-  end
-
-  def dsymutil_binary(file)
+    binary_executable_or_library_files.each do |file|
       odebug "Extracting symbols #{file}"
 
       result = system_command("dsymutil", args: [file])
-    return if result.success?
+      next if result.success?
 
       # If it fails again, error out
       onoe <<~EOS
@@ -79,4 +76,5 @@ class Keg
         #{result.stderr}
       EOS
     end
+  end
 end