Fix: memory leaks, memory access, non used values #291
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The va_end() performs cleanup. If va_end() is not called before a function that calls va_start() returns, the behavior is undefined.
ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7fab0e11bf2b bp 0x7ffdfc044b70 sp 0x7ffdfc044a90 T0) 0 0x7fab0e11bf2a in testcase_str2dep_complex /home/company/real_sanitize/libsolv-master/ext/testcase.c:577 1 0x7fab0e11c80f in testcase_str2dep /home/company/real_sanitize/libsolv-master/ext/testcase.c:656 2 0x7fab0e12e64a in testcase_read /home/company/real_sanitize/libsolv-master/ext/testcase.c:2952 3 0x402aa5 in main /home/company/real_sanitize/libsolv-master/tools/testsolv.c:148 4 0x7fab0d9d2a3f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x20a3f) 5 0x401bb8 in _start (/home/company/real_sanitize/libsolv-master/build/install/bin/testsolv+0x401bb8)
ERROR: AddressSanitizer: SEGV on unknown address 0x0000000002f0 (pc 0x7f31501d3bd2 bp 0x7ffcfe4d4a50 sp 0x7ffcfe4d4a30 T0) 0 0x7f31501d3bd1 in pool_whatprovides /home/company/real_sanitize/libsolv-master/src/pool.h:331 1 0x7f31501d895e in testcase_str2solvid /home/company/real_sanitize/libsolv-master/ext/testcase.c:793 2 0x7f31501e8388 in testcase_read /home/company/real_sanitize/libsolv-master/ext/testcase.c:2807 3 0x402aa5 in main /home/company/real_sanitize/libsolv-master/tools/testsolv.c:148 4 0x7f314fa8da3f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x20a3f) 5 0x401bb8 in _start (/home/company/real_sanitize/libsolv-master/build/install/bin/testsolv+0x401bb8) ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f5af9e7815f bp 0x7ffc4c843a40 sp 0x7ffc4c8436c0 T0) 0 0x7f5af9e7815e in testcase_read /home/company/real_sanitize/libsolv-master/ext/testcase.c:2799 1 0x402aa5 in main /home/company/real_sanitize/libsolv-master/tools/testsolv.c:148 2 0x7f5af971da3f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x20a3f) 3 0x401bb8 in _start (/home/company/real_sanitize/libsolv-master/build/install/bin/testsolv+0x401bb8)
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