Fix typos

Thanks to xx on #tukaani.

(cherry picked from commit 4e9023857d)

src/common/mythread.h

@@ -174,7 +174,7 @@ mythread_join(mythread thread)
 }
 
 
-// Initiatlizes a mutex. Returns zero on success and non-zero on error.
+// Initializes a mutex. Returns zero on success and non-zero on error.
 static inline int
 mythread_mutex_init(mythread_mutex *mutex)
 {

src/common/tuklib_integer.h

@@ -427,7 +427,7 @@ write32le(uint8_t *buf, uint32_t num)
 // aligned but some compilers have language extensions to do that. With
 // such language extensions the memcpy() method gives excellent results.
 //
-// What to do on a strict-align system when no known language extentensions
+// What to do on a strict-align system when no known language extensions
 // are available? Falling back to byte-by-byte access would be safe but ruin
 // optimizations that have been made specifically with aligned access in mind.
 // As a compromise, aligned reads will fall back to non-compliant type punning

src/liblzma/common/filter_buffer_decoder.c

@@ -24,7 +24,7 @@ lzma_raw_buffer_decode(
 			|| out_pos == NULL || *out_pos > out_size)
 		return LZMA_PROG_ERROR;
 
-	// Initialize the decoer.
+	// Initialize the decoder.
 	lzma_next_coder next = LZMA_NEXT_CODER_INIT;
 	return_if_error(lzma_raw_decoder_init(&next, allocator, filters));
 

src/liblzma/common/filter_common.c

@@ -129,7 +129,7 @@ lzma_filters_copy(const lzma_filter *src, lzma_filter *real_dest,
 		return LZMA_PROG_ERROR;
 
 	// Use a temporary destination so that the real destination
-	// will never be modied if an error occurs.
+	// will never be modified if an error occurs.
 	lzma_filter dest[LZMA_FILTERS_MAX + 1];
 
 	lzma_ret ret;

src/scripts/xzgrep.in

@@ -275,7 +275,7 @@ for i; do
     test "$(kill -l "$xz_status" 2> /dev/null)" != "PIPE" && exit "$xz_status"
   elif test "$xz_status" -gt 0; then
     # Decompression failed but we will continue with the remaining
-    # files anwyway. Set exit status to at least 2 to indicate an error.
+    # files anyway. Set exit status to at least 2 to indicate an error.
     test "$r" -lt 2 && r=2
   fi