isnull()/values(): annotate with @inline

Author: alyst

src/primitives.jl

@@ -1,7 +1,8 @@
 Base.isnull(x::NullableArray) = x.isnull
-Base.isnull(X::NullableArray, I::Int...) = X.isnull[I...]
-Base.isnull{T}(X::AbstractNullableArray{T}, I::Int...) = isnull(X[I...]) # fallback method
-Base.values(X::NullableArray, I::Int...) = X.values[I...]
+@inline Base.isnull(X::NullableArray, I::Int...) = X.isnull[I...]
+@inline Base.isnull{T}(X::AbstractNullableArray{T}, I::Int...) = isnull(X[I...]) # fallback method
+
+@inline Base.values(X::NullableArray, I::Int...) = X.values[I...]
 
 """
     size(X::NullableArray, [d::Real])