Fixed process stderr code

ChangeLog.txt

@@ -5,6 +5,9 @@
     * [Tracking] Returns the complete list of dependencies of a package
     * Process exit status code message
 
+- Fixed:
+    * Process stderr exit code
+
 - Added:
     * pprkut repository
 

slpkg/utilities.py

@@ -153,7 +153,7 @@ class Utilities(Configs):
     def process(self, command: str, stderr=None, stdout=None, filename=None) -> None:
         """ Handle the processes. """
         output = tee = ''
-        if filename and self.process_log:
+        if filename and filename.endswith('.SlackBuild') and self.process_log:
             self.header_process_log(filename)
             tee: str = (
                 f' | tee -a {self.slpkg_log_path}/{filename}_'