waifulib: strip_on_install: don't strip on PE and unknown binaries [ci skip]

scripts/waifulib/strip_on_install.py

@@ -26,6 +26,9 @@ def copy_fun(self, src, tgt):
 	if self.generator.bld.options.no_strip:
 		return
 
+	if conf.env.DEST_BINFMT not in ['elf', 'mac-o']: # don't strip unknown formats or PE
+		return
+
 	if getattr(self.generator, 'link_task', None) and self.generator.link_task.outputs[0] in self.inputs:
 		cmd = self.env.STRIP + self.env.STRIPFLAGS + [tgt]
 		try: