'have have' typos

src/xz/signals.c

@@ -23,7 +23,7 @@ volatile sig_atomic_t user_abort = false;
 /// been done.
 static volatile sig_atomic_t exit_signal = 0;
 
-/// Mask of signals for which have have established a signal handler to set
+/// Mask of signals for which we have established a signal handler to set
 /// user_abort to true.
 static sigset_t hooked_signals;
 

src/xz/xz.1

@@ -1551,7 +1551,7 @@ The old BCJ filters will still be useful in embedded systems,
 because the decoder of the new filter will be bigger
 and use more memory.
 .IP ""
-Different instruction sets have have different alignment:
+Different instruction sets have different alignment:
 .RS
 .RS
 .PP