Added toolchain_version initialisation

inclement · inclement · commit 855821b7bc4c · 2016-06-04T20:42:17.000+01:00
If the toolchain version isn't found, p4a currently crashes because it's
not defined rather than when this is checked for (and a more helpful
error returned).
diff --git a/pythonforandroid/build.py b/pythonforandroid/build.py
@@ -352,6 +352,7 @@ def prepare_build_environment(self, user_sdk_dir, user_ndk_dir,
         arch = self.archs[0]
         platform_dir = arch.platform_dir
         toolchain_prefix = arch.toolchain_prefix
+        toolchain_version = None
         self.ndk_platform = join(
             self.ndk_dir,
             'platforms',
