Fixes a typo

Author: misl6

pythonforandroid/recipes/hostpython3/__init__.py

@@ -66,7 +66,9 @@ def get_recipe_env(self, arch=None):
         env = os.environ.copy()
         openssl_prereq = OpenSSLPrerequisite()
         if env.get("PKG_CONFIG_PATH", ""):
-            os.pathsep.join(openssl_prereq.pkg_config_location, env["PKG_CONFIG_PATH"])
+            env["PKG_CONFIG_PATH"] = os.pathsep.join(
+                openssl_prereq.pkg_config_location, env["PKG_CONFIG_PATH"]
+            )
         else:
             env["PKG_CONFIG_PATH"] = openssl_prereq.pkg_config_location
         return env