take ownership of triangulation memory

Author: Jonas Isensee

src/triangulation.jl

@@ -183,31 +183,31 @@ function earcut_triangulate(polygon::Vector{Vector{Point{2,Float64}}})
     len = UInt32(length(lengths))
     array = ccall((:u32_triangulate_f64, libearcut), Tuple{Ptr{GLTriangleFace},Cint},
                   (Ptr{Ptr{Float64}}, Ptr{UInt32}, UInt32), polygon, lengths, len)
-    return unsafe_wrap(Vector{GLTriangleFace}, array[1], array[2])
+    return unsafe_wrap(Vector{GLTriangleFace}, array[1], array[2]; own=true)
 end
 
 function earcut_triangulate(polygon::Vector{Vector{Point{2,Float32}}})
     lengths = map(x -> UInt32(length(x)), polygon)
     len = UInt32(length(lengths))
     array = ccall((:u32_triangulate_f32, libearcut), Tuple{Ptr{GLTriangleFace},Cint},
                   (Ptr{Ptr{Float32}}, Ptr{UInt32}, UInt32), polygon, lengths, len)
-    return unsafe_wrap(Vector{GLTriangleFace}, array[1], array[2])
+    return unsafe_wrap(Vector{GLTriangleFace}, array[1], array[2]; own=true)
 end
 
 function earcut_triangulate(polygon::Vector{Vector{Point{2,Int64}}})
     lengths = map(x -> UInt32(length(x)), polygon)
     len = UInt32(length(lengths))
     array = ccall((:u32_triangulate_i64, libearcut), Tuple{Ptr{GLTriangleFace},Cint},
                   (Ptr{Ptr{Int64}}, Ptr{UInt32}, UInt32), polygon, lengths, len)
-    return unsafe_wrap(Vector{GLTriangleFace}, array[1], array[2])
+    return unsafe_wrap(Vector{GLTriangleFace}, array[1], array[2]; own=true)
 end
 
 function earcut_triangulate(polygon::Vector{Vector{Point{2,Int32}}})
     lengths = map(x -> UInt32(length(x)), polygon)
     len = UInt32(length(lengths))
     array = ccall((:u32_triangulate_i32, libearcut), Tuple{Ptr{GLTriangleFace},Cint},
                   (Ptr{Ptr{Int32}}, Ptr{UInt32}, UInt32), polygon, lengths, len)
-    return unsafe_wrap(Vector{GLTriangleFace}, array[1], array[2])
+    return unsafe_wrap(Vector{GLTriangleFace}, array[1], array[2]; own=true)
 end
 
 best_earcut_eltype(x) = Float64