Fixed issue on Windows where a space in a path could cause problems w…

…ith specific programs.

src/windows.rs

@@ -1,12 +1,18 @@
-use std::{ffi::OsStr, io, os::windows::ffi::OsStrExt, ptr};
+use std::{ffi::{OsStr,OsString}, io, os::windows::ffi::OsStrExt, ptr};
 
 use std::os::raw::c_int;
 use windows_sys::Win32::UI::Shell::ShellExecuteW;
 
 use crate::IntoResult;
 
 fn convert_path(path: &OsStr) -> io::Result<Vec<u16>> {
-    let mut maybe_result: Vec<_> = path.encode_wide().collect();
+    // Surround path with double quotes "" to handle spaces in path.
+    let mut quoted_path = OsString::with_capacity(path.len());
+    quoted_path.push("\"");
+    quoted_path.push(&path);
+    quoted_path.push("\"");
+
+    let mut maybe_result: Vec<_> = quoted_path.encode_wide().collect();
     if maybe_result.iter().any(|&u| u == 0) {
         return Err(io::Error::new(
             io::ErrorKind::InvalidInput,