Fix up x509_vpm.c comment.

We used upstream's reformat script, but they had stuck hyphens
everywhere to tell indent to leave a comment alone. Fix this one since
it was especially hard to read.

Change-Id: I9f43bd57dbcf66b79b775ad10ee67867d815ed33
Reviewed-on: https://boringssl-review.googlesource.com/11243
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>

crypto/x509/x509_vpm.c

@@ -192,25 +192,36 @@ void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)
     OPENSSL_free(param);
 }
 
-/*
+/*-
  * This function determines how parameters are "inherited" from one structure
- * to another. There are several different ways this can happen. 1. If a
- * child structure needs to have its values initialized from a parent they are
- * simply copied across. For example SSL_CTX copied to SSL. 2. If the
- * structure should take on values only if they are currently unset.  For
- * example the values in an SSL structure will take appropriate value for SSL
- * servers or clients but only if the application has not set new ones. The
- * "inh_flags" field determines how this function behaves. Normally any
- * values which are set in the default are not copied from the destination and
- * verify flags are ORed together. If X509_VP_FLAG_DEFAULT is set then
- * anything set in the source is copied to the destination. Effectively the
- * values in "to" become default values which will be used only if nothing new
- * is set in "from". If X509_VP_FLAG_OVERWRITE is set then all value are
- * copied across whether they are set or not. Flags is still Ored though. If
- * X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead of
- * ORed. If X509_VP_FLAG_LOCKED is set then no values are copied. If
- * X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed after
- * the next call.
+ * to another. There are several different ways this can happen.
+ *
+ * 1. If a child structure needs to have its values initialized from a parent
+ *    they are simply copied across. For example SSL_CTX copied to SSL.
+ * 2. If the structure should take on values only if they are currently unset.
+ *    For example the values in an SSL structure will take appropriate value
+ *    for SSL servers or clients but only if the application has not set new
+ *    ones.
+ *
+ * The "inh_flags" field determines how this function behaves.
+ *
+ * Normally any values which are set in the default are not copied from the
+ * destination and verify flags are ORed together.
+ *
+ * If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied
+ * to the destination. Effectively the values in "to" become default values
+ * which will be used only if nothing new is set in "from".
+ *
+ * If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether
+ * they are set or not. Flags is still Ored though.
+ *
+ * If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead
+ * of ORed.
+ *
+ * If X509_VP_FLAG_LOCKED is set then no values are copied.
+ *
+ * If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed
+ * after the next call.
  */
 
 /* Macro to test if a field should be copied from src to dest */