Reworked on mmap address alignments for a performance regression (#2057)

src/wrapped/wrappedlibc.c

@@ -2994,10 +2994,9 @@ EXPORT void* my_mmap64(x64emu_t* emu, void *addr, size_t length, int prot, int f
     new_flags&=~MAP_32BIT;   // remove MAP_32BIT
     if((flags&MAP_32BIT) && !(flags&MAP_FIXED)) {
         // MAP_32BIT only exist on x86_64!
-        if(!(flags&MAP_FIXED) && (!old_addr || !isBlockFree(old_addr, length)))
         addr = find31bitBlockNearHint(old_addr, length, 0);
     } else if (box64_wine || 1) {   // other mmap should be restricted to 47bits
-        if(!(flags&MAP_FIXED) && (!addr || !isBlockFree(addr, length)))
+        if (!(flags&MAP_FIXED) && !addr)
             addr = find47bitBlock(length);
     }
     #endif