tests: fix double-free in mfem ex1p_perf test

[adrianreber]

The mesh pointer was deleted at line 279 after creating ParMesh, but the error path at line 341 tried to delete it again. Change to delete pmesh instead since that's the active mesh object.

Generated with Claude Code

[github-actions]

Test Results

27 files   -  6  27 suites   - 6   37s ⏱️ -2s
53 tests  - 24  49 ✅  - 24  4 💤 ±0  0 ❌ ±0 
99 runs   - 36  93 ✅  - 36  6 💤 ±0  0 ❌ ±0 

Results for commit d5d873c. ± Comparison against base commit a49da38.

This pull request removes 24 tests.

rm_execution ‑ [libs/Scotch] gout binary runs under resource manager (slurm/gnu15)
rm_execution ‑ [libs/Scotch] gout binary runs under resource manager (slurm/intel)
rm_execution ‑ [libs/Scotch] graph_map binary runs under resource manager (slurm/gnu15)
rm_execution ‑ [libs/Scotch] graph_map binary runs under resource manager (slurm/intel)
rm_execution ‑ [libs/Scotch] strat_seq binary runs under resource manager (slurm/gnu15)
rm_execution ‑ [libs/Scotch] strat_seq binary runs under resource manager (slurm/intel)
test_module ‑ [libs/Scotch] Verify SCOTCH module is loaded and matches rpm version (gnu15)
test_module ‑ [libs/Scotch] Verify SCOTCH module is loaded and matches rpm version (intel)
test_module ‑ [libs/Scotch] Verify SCOTCH_DIR is defined and directory exists (gnu15)
test_module ‑ [libs/Scotch] Verify SCOTCH_DIR is defined and directory exists (intel)
…

[github-actions]

🚀 CCache Statistics

Configuration	🐧 RHEL	🦊 openEuler
🖥️ x86_64 / gnu15	🔴 8.74%	🔴 8.64%
🖥️ x86_64 / intel	🔴 9.12%	-
💪 aarch64 / gnu15	🔴 6.87%	🔴 6.92%

📊 Detailed Statistics

openEuler (aarch64)

Cacheable calls:    8853 / 11810 (74.96%)
  Hits:              613 /  8853 ( 6.92%)
    Direct:          592 /   613 (96.57%)
    Preprocessed:     21 /   613 ( 3.43%)
  Misses:           8240 /  8853 (93.08%)
Uncacheable calls:  2957 / 11810 (25.04%)
Local storage:
  Cache size (GiB):  0.3 /   5.0 ( 6.20%)
  Hits:              613 /  8853 ( 6.92%)
  Misses:           8240 /  8853 (93.08%)

openEuler (x86_64)

Cacheable calls:    9267 / 12233 (75.75%)
  Hits:              801 /  9267 ( 8.64%)
    Direct:          780 /   801 (97.38%)
    Preprocessed:     21 /   801 ( 2.62%)
  Misses:           8466 /  9267 (91.36%)
Uncacheable calls:  2966 / 12233 (24.25%)
Local storage:
  Cache size (GiB):  0.3 /   5.0 ( 6.38%)
  Hits:              801 /  9267 ( 8.64%)
  Misses:           8466 /  9267 (91.36%)

RHEL (aarch64/gnu15)

Cacheable calls:    8853 / 11803 (75.01%)
  Hits:              608 /  8853 ( 6.87%)
    Direct:          568 /   608 (93.42%)
    Preprocessed:     40 /   608 ( 6.58%)
  Misses:           8245 /  8853 (93.13%)
Uncacheable calls:  2950 / 11803 (24.99%)
Local storage:
  Cache size (GiB):  0.4 /   5.0 ( 7.14%)
  Hits:              608 /  8853 ( 6.87%)
  Misses:           8245 /  8853 (93.13%)

RHEL (x86_64/gnu15)

Cacheable calls:    9279 / 12248 (75.76%)
  Hits:              811 /  9279 ( 8.74%)
    Direct:          771 /   811 (95.07%)
    Preprocessed:     40 /   811 ( 4.93%)
  Misses:           8468 /  9279 (91.26%)
Uncacheable calls:  2969 / 12248 (24.24%)
Local storage:
  Cache size (GiB):  0.4 /   5.0 ( 7.36%)
  Hits:              811 /  9279 ( 8.74%)
  Misses:           8468 /  9279 (91.26%)

RHEL (x86_64/intel)

Cacheable calls:    9342 / 16440 (56.82%)
  Hits:              852 /  9342 ( 9.12%)
    Direct:          801 /   852 (94.01%)
    Preprocessed:     51 /   852 ( 5.99%)
  Misses:           8490 /  9342 (90.88%)
Uncacheable calls:  7098 / 16440 (43.18%)
Local storage:
  Cache size (GiB):  0.3 /   5.0 ( 6.76%)
  Hits:              852 /  9342 ( 9.12%)
  Misses:           8490 /  9342 (90.88%)

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🤖 Generated from workflow run 21117710285