Compiling ESR 31 is broken with mingw-w64 based on GCC 4.8.3
We get: ``` /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp: In static member function 'static void {anonymous}::DllBlockSet::Write(HANDLE)': /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp:422:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (b->mVersion != -1) { ^ /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp: In function 'NTSTATUS {anonymous}::patched_LdrLoadDll(PWCHAR, PULONG, PUNICODE_STRING, PHANDLE)': /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp:645:1: error: jump to label 'continue_loading' [-fpermissive] continue_loading: ^ /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp:538:12: error: from here [-fpermissive] goto continue_loading; ^ /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp:556:10: error: crosses initialization of 'char* dot' char * dot = strchr(dllName, '.'); ^ /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp:645:1: error: jump to label 'continue_loading' [-fpermissive] continue_loading: ^ /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp:528:10: error: from here [-fpermissive] goto continue_loading; ^ /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp:556:10: error: crosses initialization of 'char* dot' char * dot = strchr(dllName, '.'); ^ /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp:645:1: error: jump to label 'continue_loading' [-fpermissive] continue_loading: ^ /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp:506:10: error: from here [-fpermissive] goto continue_loading; ^ /home/ubuntu/build/tor-browser/mozglue/build/WindowsDllBlocklist.cpp:556:10: error: crosses initialization of 'char* dot' char * dot = strchr(dllName, '.'); ^ ```
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