Update MSRV for windows crate to 1.62 (#2730)

.github/workflows/windows.yml

@@ -16,7 +16,7 @@ jobs:
     name: Check
     strategy:
       matrix:
-        rust: [1.56.0, stable, nightly]
+        rust: [1.62.0, stable, nightly]
         runs-on:
           - windows-2019
           - ubuntu-latest

crates/libs/core/Cargo.toml

@@ -3,7 +3,7 @@ name = "windows-core"
 version = "0.52.0"
 authors = ["Microsoft"]
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.62"
 license = "MIT OR Apache-2.0"
 description = "Rust for Windows"
 repository = "https://github.com/microsoft/windows-rs"

crates/libs/core/src/imp/mod.rs

@@ -20,15 +20,6 @@ pub use sha1::*;
 pub use waiter::*;
 pub use weak_ref_count::*;
 
-// This is a workaround since 1.56 does not include `bool::then_some`.
-pub fn then_some<T>(value: bool, t: T) -> Option<T> {
-    if value {
-        Some(t)
-    } else {
-        None
-    }
-}
-
 pub fn wide_trim_end(mut wide: &[u16]) -> &[u16] {
     while let Some(last) = wide.last() {
         match last {

crates/libs/core/src/imp/weak_ref_count.rs

@@ -13,11 +13,11 @@ impl WeakRefCount {
     }
 
     pub fn add_ref(&self) -> u32 {
-        self.0.fetch_update(Ordering::Relaxed, Ordering::Relaxed, |count_or_pointer| then_some(!is_weak_ref(count_or_pointer), count_or_pointer + 1)).map(|u| u as u32 + 1).unwrap_or_else(|pointer| unsafe { TearOff::decode(pointer).strong_count.add_ref() })
+        self.0.fetch_update(Ordering::Relaxed, Ordering::Relaxed, |count_or_pointer| bool::then_some(!is_weak_ref(count_or_pointer), count_or_pointer + 1)).map(|u| u as u32 + 1).unwrap_or_else(|pointer| unsafe { TearOff::decode(pointer).strong_count.add_ref() })
     }
 
     pub fn release(&self) -> u32 {
-        self.0.fetch_update(Ordering::Release, Ordering::Relaxed, |count_or_pointer| then_some(!is_weak_ref(count_or_pointer), count_or_pointer - 1)).map(|u| u as u32 - 1).unwrap_or_else(|pointer| unsafe {
+        self.0.fetch_update(Ordering::Release, Ordering::Relaxed, |count_or_pointer| bool::then_some(!is_weak_ref(count_or_pointer), count_or_pointer - 1)).map(|u| u as u32 - 1).unwrap_or_else(|pointer| unsafe {
             let tear_off = TearOff::decode(pointer);
             let remaining = tear_off.strong_count.release();
 
@@ -222,7 +222,7 @@ impl TearOff {
             .fetch_update(Ordering::Acquire, Ordering::Relaxed, |count| {
                 // Attempt to acquire a strong reference count to stabilize the object for the duration
                 // of the `QueryInterface` call.
-                then_some(count != 0, count + 1)
+                bool::then_some(count != 0, count + 1)
             })
             .map(|_| {
                 // Let the object respond to the upgrade query.

crates/libs/windows/Cargo.toml

@@ -4,7 +4,7 @@ name = "windows"
 version = "0.52.0"
 authors = ["Microsoft"]
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.62"
 license = "MIT OR Apache-2.0"
 description = "Rust for Windows"
 repository = "https://github.com/microsoft/windows-rs"