Style: fix some header guards

Change-Id: I86c30c7fe489c720f83f744696df0a0a20268531
Reviewed-on: https://boringssl-review.googlesource.com/6317
Reviewed-by: Adam Langley <alangley@gmail.com>

include/openssl/cmac.h

@@ -73,4 +73,4 @@ OPENSSL_EXPORT int CMAC_Final(CMAC_CTX *ctx, uint8_t *out, size_t *out_len);
 }  /* extern C */
 #endif
 
-#endif  /* OPENSSL_HEADER_CBC_H */
+#endif  /* OPENSSL_HEADER_CMAC_H */

include/openssl/lhash.h

@@ -189,4 +189,4 @@ OPENSSL_EXPORT uint32_t lh_strhash(const char *c);
 } /* extern C */
 #endif
 
-#endif /* OPENSSL_HEADER_STACK_H */
+#endif /* OPENSSL_HEADER_LHASH_H */

include/openssl/obj.h

@@ -54,8 +54,8 @@
  * copied and put under another distribution licence
  * [including the GNU Public Licence.] */
 
-#ifndef OPENSSL_HEADER_OBJECTS_H
-#define OPENSSL_HEADER_OBJECTS_H
+#ifndef OPENSSL_HEADER_OBJ_H
+#define OPENSSL_HEADER_OBJ_H
 
 #include <openssl/base.h>
 
@@ -195,4 +195,4 @@ OPENSSL_EXPORT int OBJ_find_sigid_by_algs(int *out_sign_nid, int digest_nid,
 
 #define OBJ_R_UNKNOWN_NID 100
 
-#endif  /* OPENSSL_HEADER_OBJECTS_H */
+#endif  /* OPENSSL_HEADER_OBJ_H */

include/openssl/time_support.h

@@ -55,8 +55,8 @@
  * (eay@cryptsoft.com).  This product includes software written by Tim
  * Hudson (tjh@cryptsoft.com). */
 
-#ifndef OPENSSL_HEADER_TIME_H
-#define OPENSSL_HEADER_TIME_H
+#ifndef OPENSSL_HEADER_TIME_SUPPORT_H
+#define OPENSSL_HEADER_TIME_SUPPORT_H
 
 #include <openssl/base.h>
 
@@ -87,4 +87,4 @@ int OPENSSL_gmtime_diff(int *out_days, int *out_secs, const struct tm *from,
 }  /* extern C */
 #endif
 
-#endif  /* OPENSSL_HEADER_TIME_H */
+#endif  /* OPENSSL_HEADER_TIME_SUPPORT_H */