Enable the engine feature on windows (#109)

* Enable the engine feature on windows

I'm doing things on Windows and that require the `engine` feature to be enabled so that `ENGINE_by_id` is available.
This commit succeeds for me locally in a win64 msvc environment.

* fix typo

This is what happens when you edit via the webui

src/lib.rs

@@ -176,11 +176,16 @@ impl Build {
             configure.arg("no-seed");
         }
 
-        if target.contains("musl") || target.contains("windows") {
+        if target.contains("musl") {
             // This actually fails to compile on musl (it needs linux/version.h
             // right now) but we don't actually need this most of the time.
-            // API of engine.c ld fail in Windows.
             configure.arg("no-engine");
+        } else if target.contains("windows") {
+            // We can build the engine feature, but the build doesn't seem
+            // to correctly pick up crypt32.lib functions such as
+            // `__imp_CertOpenStore` when building the capieng engine.
+            // Let's disable just capieng.
+            configure.arg("no-capieng");
         }
 
         if target.contains("musl") {