evrp: fix AddressSanitizer: alloc-dealloc-mismatch

evrp: fix AddressSanitizer: alloc-dealloc-mismatch

The fixed error is:

==21166==ERROR: AddressSanitizer: alloc-dealloc-mismatch (operator new [] vs operator delete) on 0x60300000d900
    #0 0x7367d7 in operator delete(void*, unsigned long) /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/libsanitizer/asan/asan_new_delete.cpp:172
    #1 0x3b82e6e in pointer_equiv_analyzer::~pointer_equiv_analyzer() /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/gimple-ssa-evrp.c:161
    #2 0x3b83387 in hybrid_folder::~hybrid_folder() /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/gimple-ssa-evrp.c:517
    #3 0x3b83387 in execute_early_vrp /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/gimple-ssa-evrp.c:686
    #4 0x1790611 in execute_one_pass(opt_pass*) /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/passes.c:2567
    #5 0x1792003 in execute_pass_list_1 /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/passes.c:2656
    #6 0x1792029 in execute_pass_list_1 /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/passes.c:2657
    #7 0x179209f in execute_pass_list(function*, opt_pass*) /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/passes.c:2667
    #8 0x178a5f3 in do_per_function_toporder(void (*)(function*, void*), void*) /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/passes.c:1773
    #9 0x1792fac in do_per_function_toporder(void (*)(function*, void*), void*) /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/plugin.h:191
    #10 0x1792fac in execute_ipa_pass_list(opt_pass*) /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/passes.c:3001
    #11 0xc525fc in ipa_passes /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/cgraphunit.c:2154
    #12 0xc525fc in symbol_table::compile() /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/cgraphunit.c:2289
    #13 0xc5a096 in symbol_table::compile() /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/cgraphunit.c:2269
    #14 0xc5a096 in symbol_table::finalize_compilation_unit() /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/cgraphunit.c:2537
    #15 0x1a7a17c in compile_file /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/toplev.c:482
    #16 0x69c758 in do_compile /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/toplev.c:2210
    #17 0x69c758 in toplev::main(int, char**) /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/toplev.c:2349
    #18 0x6a932a in main /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/main.c:39
    #19 0x7ffff7820b34 in __libc_start_main ../csu/libc-start.c:332
    #20 0x6aa5fd in _start (/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/objdir/gcc/cc1+0x6aa5fd)

0x60300000d900 is located 0 bytes inside of 32-byte region [0x60300000d900,0x60300000d920)
allocated by thread T0 here:
    #0 0x735ab7 in operator new[](unsigned long) /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/libsanitizer/asan/asan_new_delete.cpp:102
    #1 0x3b82dac in pointer_equiv_analyzer::pointer_equiv_analyzer(gimple_ranger*) /home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-asan/build/gcc/gimple-ssa-evrp.c:156

gcc/ChangeLog:

	* gimple-ssa-evrp.c (pointer_equiv_analyzer::~pointer_equiv_analyzer): Use delete[].