Fixed findings

List of Findings

Error: GCC_ANALYZER_WARNING (CWE-401): [#def1]
nbdkit-1.47.5/filters/cow/cow.c:85:1: warning[-Wanalyzer-malloc-leak]: leak of 'h'
nbdkit-1.47.5/filters/cow/cow.c:176:1: enter_function: entry to 'cow_open'
nbdkit-1.47.5/filters/cow/cow.c:181:7: acquire_memory: allocated here
nbdkit-1.47.5/filters/cow/cow.c:182:6: branch_false: following 'false' branch (when 'h' is non-NULL)...
nbdkit-1.47.5/filters/cow/cow.c:191:5: branch_false: ...to here
nbdkit-1.47.5/filters/cow/cow.c:191:5: branch_true: following 'true' branch (when '_r == 0')...
nbdkit-1.47.5/filters/cow/cow.c:191:5: branch_true: ...to here
nbdkit-1.47.5/filters/cow/cow.c:200:8: branch_true: following 'true' branch...
nbdkit-1.47.5/filters/cow/cow.c:203:30: branch_true: ...to here
nbdkit-1.47.5/filters/cow/cow.c:204:10: branch_false: following 'false' branch...
nbdkit-1.47.5/filters/cow/cow.c:209:32: branch_false: ...to here
nbdkit-1.47.5/filters/cow/cow.c:210:10: branch_false: following 'false' branch...
nbdkit-1.47.5/filters/cow/cow.c:215:11: branch_false: ...to here
nbdkit-1.47.5/filters/cow/cow.c:215:11: call_function: calling 'blk_list_append' from 'cow_open'
nbdkit-1.47.5/filters/cow/cow.c:215:11: return_function: returning to 'cow_open' from 'blk_list_append'
nbdkit-1.47.5/filters/cow/cow.c:215:10: branch_false: following 'false' branch...
nbdkit-1.47.5/filters/cow/cow.c:221:7: branch_false: ...to here
nbdkit-1.47.5/filters/cow/cow.c:227:6: branch_true: following 'true' branch...
nbdkit-1.47.5/filters/cow/cow.c:228:12: branch_true: ...to here
nbdkit-1.47.5/filters/cow/cow.c:85:1: danger: 'h' leaks here; was allocated at [(2)](sarif:/runs/0/results/0/codeFlows/0/threadFlows/0/locations/1)
#   83|     struct blk_overlay *blk;
#   84|   };
#   85|-> DEFINE_VECTOR_TYPE (blk_list, struct export_mapping);
#   86|   static blk_list blks;
#   87|   

Error: GCC_ANALYZER_WARNING (CWE-401): [#def2]
nbdkit-1.47.5/filters/cow/cow.c:231:1: warning[-Wanalyzer-malloc-leak]: leak of 'h'
nbdkit-1.47.5/filters/cow/cow.c:181:7: acquire_memory: allocated here
nbdkit-1.47.5/filters/cow/cow.c:182:6: branch_false: following 'false' branch (when 'h' is non-NULL)...
nbdkit-1.47.5/filters/cow/cow.c:191:5: branch_false: ...to here
nbdkit-1.47.5/filters/cow/cow.c:191:5: branch_true: following 'true' branch (when '_r == 0')...
nbdkit-1.47.5/filters/cow/cow.c:191:5: branch_true: ...to here
nbdkit-1.47.5/filters/cow/cow.c:192:17: branch_true: following 'true' branch...
nbdkit-1.47.5/filters/cow/cow.c:193:19: branch_true: ...to here
nbdkit-1.47.5/filters/cow/cow.c:200:8: branch_false: following 'false' branch...
nbdkit-1.47.5/filters/cow/cow.c:191:5: branch_false: ...to here
nbdkit-1.47.5/filters/cow/cow.c:227:6: branch_true: following 'true' branch...
nbdkit-1.47.5/filters/cow/cow.c:228:12: branch_true: ...to here
nbdkit-1.47.5/filters/cow/cow.c:231:1: danger: 'h' leaks here; was allocated at [(1)](sarif:/runs/0/results/1/codeFlows/0/threadFlows/0/locations/0)
#  229|   
#  230|     return h;
#  231|-> }
#  232|   
#  233|   static void

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