no-implicit-conversion should not warn on "" + "foo"

[TheSavior]

What version of ESLint are you using?
3.4.0

What parser (default, Babel-ESLint, etc.) are you using?
default

Please show your full configuration:
Running the test suite

What did you do? Please include the actual source code causing the issue.
I added a test that the following should be valid:

{code: "1 * 1"},
{code: "'' + 'foo'"},

and ran

./node_modules/.bin/mocha /Users/eli/projects/eslint/tests/lib/rules/no-implicit-coercion.js

What did you expect to happen?
I expected these to be valid

What actually happened? Please include the actual, raw output from ESLint.
eslint was fine with 1 * 1 but not with "" + "foo".

While both of these aren't very good patterns for people to be following, there is nothing happening with type conversion here and thus no-implicit-conversion should not care about these cases.

[platinumazure]

Just to be clear, the issue here is that there is no conversion because the other operand is definitely the same type?

[kaicataldo]

Seems like a bug to me, given that no coercion is happening. Confirmed locally.

[TheSavior]

@platinumazure yep, exactly.