Complex instance will not run when a real instance exists

Description

Complex ADflow will not run properly when a real instance exists at the same time.

Steps to reproduce issue

Here is a MWE:

from baseclasses import AeroProblem
from adflow import ADFLOW, ADFLOW_C

aeroOptions = {
    "gridfile": "../../input_files/naca0012_rans-L2.cgns",
    "MGCycle": "sg",
}
ap = AeroProblem(
    name="mdo_tutorial",
    alpha=1.8,
    mach=0.80,
    P=20000.0,
    T=220.0,
    areaRef=45.5,
    chordRef=3.25,
    beta=0.0,
    R=287.87,
    xRef=0.0,
    yRef=0.0,
    zRef=0.0,
)

# Create solvers
CFDSolver_real = ADFLOW(options=aeroOptions)
CFDSolver_complex = ADFLOW_C(options=aeroOptions)

# Try to use run the complex solver
CFDSolver_complex(ap)

Current behavior

Running the example above will result in errors like the following:

[0]PETSC ERROR: PetscTrFreeDefault() called from VecDestroy_MPI() line 21 in packages/petsc-3.15.1/src/vec/vec/impls/mpi/pdvec.c
[0]PETSC ERROR: Block [id=1190(92160)] at address 0x5636dfd7cf30 is corrupted (probably write past end of array)
[0]PETSC ERROR: Block allocated in VecCreate_MPI_Private() line 515 in packages/petsc-3.15.1/src/vec/vec/impls/mpi/pbvec.c
[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
[0]PETSC ERROR: Memory corruption: https://www.mcs.anl.gov/petsc/documentation/installation.html#valgrind
[0]PETSC ERROR: Corrupted memory
[0]PETSC ERROR: See https://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting.
[0]PETSC ERROR: Petsc Release Version 3.15.1, Jun 17, 2021 

Expected behavior

The solver should run properly.

Start by running the supplied MWE with both ADFLOW and ADFLOW_C instances and capture the PETSc memory-corruption output. Trace the ADFLOW and ADFLOW_C entry points and their interaction when a real solver already exists; done means the complex solver runs successfully in that situation without PETSc errors.