FunC incorrectly return from condition in inline functions

[EmelyanenkoK]

The following code

int f1(a) inline {
  if (a > -1) {
    return 3;
  } 
  return 2;
}

int main() {
  return 1 + f1(2); 
}

will be compiled into

PROGRAM{
  DECLPROC f1
  DECLPROC main
  f1 PROC:<{
    //  a
    -1 GTINT	//  _2
    IFJMP:<{	// 
      3 PUSHINT	//  _3=3
    }>	// 
    2 PUSHINT	//  _4=2
  }>
  main PROC:<{
    // 
    2 PUSHINT	//  _1=2
    f1 INLINECALLDICT	//  _2
    INC	//  _3
  }>
}END>c

and upon execution
<b b> 0 "some.fif" include <s <b b> runvm 2drop swap drop
will return 3 instead of 4.

This bug happens due to the fact that funC compiler inserts IFJMP for ifs with returns (in f1 in example above) and being inlined IFJMP jumps out not from the function it caused (f1) but from the function which inlined function with if (main).

There are two approaches to combat this behavior:

1. detect on funC level that function is inlined and do not use IFJMPs in that case
2. redefine INLINECALLDICT such it will wrap inline functions into PUSHCONT { ... } EXECUTE (this will, however, consume excessive space even for the cases when it is not necessary).