Merge pull request #136 from control-toolbox/onepass-fix

fixed __wrap and __throw

src/onepass.jl

@@ -1,6 +1,5 @@
 # onepass
 # todo:
-# - for all p_... functions, write: code = quote ... end; __wrap(code, p.lnum, p.line)
 # - cannot call solve if problem not fully defined (dynamics not defined...)
 # - doc: explain projections wrt to t0, tf, t; (...x1...x2...)(t) -> ...gensym1...gensym2... (most internal first)
 # - test non autonomous cases
@@ -36,14 +35,14 @@ __init_aliases() = begin
     al
 end
 
-__throw(ex, n, line) = begin
-    quote
-        info = string("\nLine ", $n, ": ", $line)
-        throw(ParsingError(info * "\n" * $ex))
-    end
+__throw(ex, n, line) = quote
+    local info
+    info = string("\nLine ", $n, ": ", $line)
+    throw(ParsingError(info * "\n" * $ex))
 end
 
 __wrap(e, n, line) = quote
+    local ex
     try
         $e
     catch ex