fix warning text

Author: RalfJung

src/diagnostics.rs

@@ -451,13 +451,13 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
                         format!("{op} was made to return an error due to isolation"),
                     ProgressReport =>
                         format!("progress report: current operation being executed is here"),
-                    Int2Ptr => format!("pointer-to-integer cast"),
+                    Int2Ptr => format!("integer-to-pointer cast"),
                 };
 
                 let (title, diag_level) = match e {
                     RejectedIsolatedOp(_) =>
                         ("operation rejected by isolation", DiagLevel::Warning),
-                    Int2Ptr => ("pointer-to-integer cast", DiagLevel::Warning),
+                    Int2Ptr => ("integer-to-pointer cast", DiagLevel::Warning),
                     CreatedPointerTag(..)
                     | PoppedPointerTag(..)
                     | CreatedCallId(..)

tests/pass/box.stderr

@@ -1,8 +1,8 @@
-warning: pointer-to-integer cast
+warning: integer-to-pointer cast
   --> $DIR/box.rs:LL:CC
    |
 LL |         let r2 = ((r as usize) + 0) as *mut i32;
-   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pointer-to-integer cast
+   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ integer-to-pointer cast
    |
    = help: this program is using integer-to-pointer casts or (equivalently) `from_exposed_addr`,
    = help: which means that Miri might miss pointer bugs in this program

tests/pass/extern_types.stderr

@@ -1,8 +1,8 @@
-warning: pointer-to-integer cast
+warning: integer-to-pointer cast
   --> $DIR/extern_types.rs:LL:CC
    |
 LL |     let x: &Foo = unsafe { &*(16 as *const Foo) };
-   |                              ^^^^^^^^^^^^^^^^^^ pointer-to-integer cast
+   |                              ^^^^^^^^^^^^^^^^^^ integer-to-pointer cast
    |
    = help: this program is using integer-to-pointer casts or (equivalently) `from_exposed_addr`,
    = help: which means that Miri might miss pointer bugs in this program