Global: major FFstrbuf related code refactor

src/fastfetch.c

@@ -612,8 +612,7 @@ static void optionParseConfigFile(FFinstance* instance, FFdata* data, const char
 
     //Try to load as a relative path
 
-    FFstrbuf absolutePath;
-    ffStrbufInitA(&absolutePath, 128);
+    FF_STRBUF_AUTO_DESTROY absolutePath = ffStrbufCreateA(128);
 
     FF_LIST_FOR_EACH(FFstrbuf, path, instance->state.platform.dataDirs)
     {
@@ -628,8 +627,6 @@ static void optionParseConfigFile(FFinstance* instance, FFdata* data, const char
             return;
     }
 
-    ffStrbufDestroy(&absolutePath);
-
     //File not found
 
     fprintf(stderr, "Error: couldn't find config: %s\n", value);