static: doAssert false gives importc error with --panics:on

[timotheecour]

Example

static: doAssert false

Current Output

nim r --panics:on main
system/fatal.nim(41, 5) Error: cannot 'importc' variable at compile time; cstderr

Expected Output

a different CT error

Additional Information

devel 1.5.1 6d442a4

[ringabout]

Should we just keep the same behaviour as panics:off?

D:\QQPCmgr\Desktop\Nim>nim c -r --lib:lib --panics:on play.nim 
Hint: used config file 'C:\Users\blue\.choosenim\toolchains\nim-#devel\config\nim.cfg' [Conf]
Hint: used config file 'C:\Users\blue\.choosenim\toolchains\nim-#devel\config\config.nims' [Conf]
....
stack trace: (most recent call last)
D:\QQPCmgr\Desktop\Nim\play.nim(1, 11) play
D:\QQPCmgr\Desktop\Nim\lib\system\assertions.nim(30, 26) failedAssertImpl
D:\QQPCmgr\Desktop\Nim\lib\system\assertions.nim(23, 11) raiseAssert
D:\QQPCmgr\Desktop\Nim\lib\system\fatal.nim(48, 13) sysFatal
D:\QQPCmgr\Desktop\Nim\lib\system\fatal.nim(34, 7) sysFatal
D:\QQPCmgr\Desktop\Nim\lib\system\fatal.nim(34, 7) Error: unhandled exception: D:\QQPCmgr\Desktop\Nim\play.nim(1, 18) `false`  [AssertionDefect]