Update to Cranelift 0.28.0.

Also region 2.0.0 and bindgen 0.47.1.

lib/runtime/Cargo.toml

@@ -16,7 +16,7 @@ cranelift-codegen = "0.28.0"
 cranelift-entity = "0.28.0"
 cranelift-wasm = "0.28.0"
 wasmtime-environ = { path = "../environ", default-features = false }
-region = "1.0.0"
+region = "2.0.0"
 lazy_static = "1.2.0"
 libc = { version = "0.2.44", default-features = false }
 errno = "0.2.4"
@@ -31,7 +31,7 @@ winapi = { version = "0.3.6", features = ["winbase", "memoryapi"] }
 
 [build-dependencies]
 cmake = "0.1.35"
-bindgen = "0.46.0"
+bindgen = "0.47.1"
 regex = "1.0.6"
 
 [features]

lib/runtime/src/memory.rs

@@ -117,7 +117,7 @@ impl LinearMemory {
             new_mmap.as_mut_slice()[..copy_len].copy_from_slice(&self.mmap.as_slice()[..copy_len]);
 
             self.mmap = new_mmap;
-        } else {
+        } else if delta_bytes > 0 {
             // Make the newly allocated pages accessible.
             self.mmap.make_accessible(prev_bytes, delta_bytes).ok()?;
         }