Rust: Add model for GlobalAlloc::realloc

Author: paldepind

rust/ql/lib/codeql/rust/frameworks/stdlib/alloc.model.yml

@@ -15,6 +15,7 @@ extensions:
       - ["alloc::alloc::realloc", "Argument[2]", "alloc-size", "manual"]
       - ["<core::alloc::global::GlobalAlloc>::alloc", "Argument[0]", "alloc-layout", "manual"]
       - ["<core::alloc::global::GlobalAlloc>::alloc_zeroed", "Argument[0]", "alloc-layout", "manual"]
+      - ["<core::alloc::global::GlobalAlloc>::realloc", "Argument[2]", "alloc-size", "manual"]
       - ["<core::alloc::Allocator>::allocate", "Argument[0]", "alloc-layout", "manual"]
       - ["<core::alloc::Allocator>::allocate_zeroed", "Argument[0]", "alloc-layout", "manual"]
       - ["<core::alloc::Allocator>::grow", "Argument[2]", "alloc-layout", "manual"]