Remove obsolete field type assertions

Author: timholy

base/stream.jl

@@ -378,7 +378,7 @@ function isopen(x::Union{LibuvStream, LibuvServer})
     if x.status == StatusUninit || x.status == StatusInit
         throw(ArgumentError("$x is not initialized"))
     end
-    return x.status::Int != StatusClosed && x.status::Int != StatusEOF
+    return x.status != StatusClosed && x.status != StatusEOF
 end
 
 function check_open(x::Union{LibuvStream, LibuvServer})
@@ -453,7 +453,7 @@ function close(stream::Union{LibuvStream, LibuvServer})
         stream.status = StatusClosing
     elseif isopen(stream) || stream.status == StatusEOF
         should_wait = uv_handle_data(stream) != C_NULL
-        if stream.status::Int != StatusClosing
+        if stream.status != StatusClosing
             ccall(:jl_close_uv, Cvoid, (Ptr{Cvoid},), stream.handle)
             stream.status = StatusClosing
         end
@@ -468,7 +468,7 @@ function uvfinalize(uv::Union{LibuvStream, LibuvServer})
     iolock_begin()
     if uv.handle != C_NULL
         disassociate_julia_struct(uv.handle) # not going to call the usual close hooks
-        if uv.status::Int != StatusUninit
+        if uv.status != StatusUninit
             close(uv)
         else
             Libc.free(uv.handle)
@@ -582,7 +582,7 @@ function uv_alloc_buf(handle::Ptr{Cvoid}, size::Csize_t, buf::Ptr{Cvoid})
     stream = unsafe_pointer_to_objref(hd)::LibuvStream
 
     local data::Ptr{Cvoid}, newsize::Csize_t
-    if stream.status::Int != StatusActive
+    if stream.status != StatusActive
         data = C_NULL
         newsize = 0
     else
@@ -615,7 +615,7 @@ function uv_readcb(handle::Ptr{Cvoid}, nread::Cssize_t, buf::Ptr{Cvoid})
                     if isa(stream, TTY)
                         stream.status = StatusEOF # libuv called uv_stop_reading already
                         notify(stream.cond)
-                    elseif stream.status::Int != StatusClosing
+                    elseif stream.status != StatusClosing
                         # begin shutdown of the stream
                         ccall(:jl_close_uv, Cvoid, (Ptr{Cvoid},), stream.handle)
                         stream.status = StatusClosing
@@ -725,7 +725,7 @@ show(io::IO, stream::Pipe) = print(io,
 
 function open_pipe!(p::PipeEndpoint, handle::OS_HANDLE)
     iolock_begin()
-    if p.status::Int != StatusInit
+    if p.status != StatusInit
         error("pipe is already in use or has been closed")
     end
     err = ccall(:uv_pipe_open, Int32, (Ptr{Cvoid}, OS_HANDLE), p.handle, handle)
@@ -1119,7 +1119,7 @@ _fd(x::Union{OS_HANDLE, RawFD}) = x
 
 function _fd(x::Union{LibuvStream, LibuvServer})
     fd = Ref{OS_HANDLE}(INVALID_OS_HANDLE)
-    if x.status::Int != StatusUninit && x.status::Int != StatusClosed
+    if x.status != StatusUninit && x.status != StatusClosed
         err = ccall(:uv_fileno, Int32, (Ptr{Cvoid}, Ptr{OS_HANDLE}), x.handle, fd)
         # handle errors by returning INVALID_OS_HANDLE
     end