Protect use of mallinfo in #ifdef __GLIBC__ blocks

src/commands.cc

@@ -29,7 +29,10 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
+
+#if defined(__GLIBC__)
 #include <malloc.h>
+#endif
 
 namespace Kakoune
 {
@@ -835,7 +838,9 @@ const CommandDesc debug_cmd = {
                 write_debug(domain_name((MemoryDomain)domain) + (": " + to_string(count)));
             }
             write_debug("Total: " + to_string(total));
+            #if defined(__GLIBC__)
             write_debug("Malloced: " + to_string(mallinfo().uordblks));
+            #endif
         }
         else
             throw runtime_error("unknown debug command '" + parser[0] + "'");