Merge rust-bitcoin/rust-miniscript#409: Remove trailing whitespace

b5f01f3f940647ff1bf972bbde854dffa704d59a Remove trailing whitespace (Tobin C. Harding)

Pull request description:

  I recently introduced a character of trailing whitespace, remove it.

ACKs for top commit:
  apoelstra:
    ACK b5f01f3f940647ff1bf972bbde854dffa704d59a

Tree-SHA512: a09922844fb60d275b06fcf5afaf417ab1ac58854534c21ed679d38f9c2e885eea202713740025ba239a5409ab4d33c56f72f5caa0d54bc96e27d87affe78360

Author: heap-coder

contrib/test.sh

@@ -47,7 +47,7 @@ then
 
     # Run all the examples
     cargo build --examples
-    cargo run --example htlc --features=compiler 
+    cargo run --example htlc --features=compiler
     cargo run --example parse
     cargo run --example sign_multisig
     cargo run --example verify_tx > /dev/null