fix optic parsing function (#97)

Author: sunxd3

Project.toml

@@ -3,7 +3,7 @@ uuid = "7a57a42e-76ec-4ea3-a279-07e840d6d9cf"
 keywords = ["probablistic programming"]
 license = "MIT"
 desc = "Common interfaces for probabilistic programming"
-version = "0.8.3"
+version = "0.8.4"
 
 [deps]
 AbstractMCMC = "80f14c24-f653-4e6a-9b94-39d6b0f70001"

src/varname.jl

@@ -665,7 +665,7 @@ end
 
 function _parse_obj_optic(ex)
     obj, optics = _parse_obj_optics(ex)
-    optic = Expr(:call, :(Accessors.opticcompose), optics...)
+    optic = Expr(:call, Accessors.opticcompose, optics...)
     obj, optic
 end