wire: vec: Rework if-let-chain for toolchain 1.85

As currently tested by mctp-dev.

Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>

Author: amboar

src/wire/vec.rs

@@ -45,17 +45,19 @@ where
     Ctx: Copy,
     Predicate: FnMut(usize, &T) -> bool,
 {
-    if let Some(cap) = capacity
-        && cap > S
-    {
-        return Err(deku_error!(
-            DekuError::InvalidParam,
-            "Provided capacity is larger than vector capacity",
-            "{} exceeds {}",
-            cap,
-            S
-        ));
+    #[allow(clippy::collapsible_if)]
+    if let Some(cap) = capacity {
+        if cap > S {
+            return Err(deku_error!(
+                DekuError::InvalidParam,
+                "Provided capacity is larger than vector capacity",
+                "{} exceeds {}",
+                cap,
+                S
+            ));
+        }
     }
+
     if mem::size_of::<T>() == 0 {
         return Ok(WireVec::new());
     }