[Tile-serving] [osm2pgsql] Memory leaks of C++ version (Windows-only?) (#228)

[alex85k]

Strdup-related one:
```
      Start  1: test-parse-xml2

1: Test command: D:\build_d2\osm2pgsql-cmake\Debug\test-parse-xml2.exe
1: Test timeout computed to be: 1500
1: Visual Leak Detector Version 2.4RC2 installed.
1: WARNING: Visual Leak Detector detected memory leaks!
1: ---------- Block 8 at 0x000000005035DBC0: 7 bytes ----------
1:   Leak Hash: 0x1CA7D0A4, Count: 1, Total 7 bytes
1:   Call Stack (TID 6824):
1:     0x00000000D138A6C0 (File and line number not available): MSVCR120D.dll!strdup
1:     d:\build_d2\osm2pgsql-cmake\osm2pgsql-cpp\taginfo.cpp (24): test-parse-xml2.exe!flagsname::flagsname + 0x33 bytes
1:     d:\build_d2\osm2pgsql-cmake\osm2pgsql-cpp\taginfo.cpp (37): test-parse-xml2.exe!`dynamic initializer for 'tagflags'' + 0x79 bytes
1:     0x00000000D13555AC (File and line number not available): MSVCR120D.dll!initterm + 0x2C bytes
1:     f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c (551): test-parse-xml2.exe!__tmainCRTStartup
1:     f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c (466): test-parse-xml2.exe!mainCRTStartup
1:     0x00000000EDA916AD (File and line number not available): KERNEL32.DLL!BaseThreadInitThunk + 0xD bytes
1:     0x00000000EE234409 (File and line number not available): ntdll.dll!RtlUserThreadStart + 0x1D bytes
1:   Data:
1:     64 65 6C 65    74 65 00                                      delete.. ........
1: 
1: 
1: ---------- Block 7 at 0x000000005035DC10: 8 bytes ----------
1:   Leak Hash: 0xE57F6FE3, Count: 1, Total 8 bytes
1:   Call Stack (TID 6824):
1:     0x00000000D138A6C0 (File and line number not available): MSVCR120D.dll!strdup
1:     d:\build_d2\osm2pgsql-cmake\osm2pgsql-cpp\taginfo.cpp (24): test-parse-xml2.exe!flagsname::flagsname + 0x33 bytes
1:     d:\build_d2\osm2pgsql-cmake\osm2pgsql-cpp\taginfo.cpp (37): test-parse-xml2.exe!`dynamic initializer for 'tagflags'' + 0x60 bytes
1:     0x00000000D13555AC (File and line number not available): MSVCR120D.dll!initterm + 0x2C bytes
1:     f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c (551): test-parse-xml2.exe!__tmainCRTStartup
1:     f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c (466): test-parse-xml2.exe!mainCRTStartup
1:     0x00000000EDA916AD (File and line number not available): KERNEL32.DLL!BaseThreadInitThunk + 0xD bytes
1:     0x00000000EE234409 (File and line number not available): ntdll.dll!RtlUserThreadStart + 0x1D bytes
1:   Data:
1:     6E 6F 63 61    63 68 65 00                                   nocache. ........
1: 
```

---
Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/osm2pgsql/issues/228#issuecomment-65906010
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