Fixed zlib recipe on linux.

recipes/zlib/recipe.py

@@ -9,9 +9,7 @@ _TAG_PATTERN = re.compile(r'^v([0-9]+)\.([0-9]+)(?:\.([0-9]+))?$')
 
 def _build_lib_name(env: Environment) -> str:
     if os.name == 'posix':
-        return {
-            'debug': 'zd'
-        }.get(env['BUILD_TYPE'], 'z')
+        return 'z'
     elif os.name == 'nt':
         return {
             'debug': 'zlibstaticd'