[Wasm] Add missing EOF checks for floats
[Wasm] Add missing EOF checks for floats

Adds the same checks we already do for ints to floats.

Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8698

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@341216 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit 1dc41819630ed5abec593cc8b7ecf94630d04d63)

apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm