Remove useless NULL checks

Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

crypto/dh/dh_meth.c

@@ -31,8 +31,7 @@ DH_METHOD *DH_meth_new(const char *name, int flags)
 void DH_meth_free(DH_METHOD *dhm)
 {
     if (dhm != NULL) {
-        if (dhm->name != NULL)
-            OPENSSL_free(dhm->name);
+        OPENSSL_free(dhm->name);
         OPENSSL_free(dhm);
     }
 }

crypto/dsa/dsa_meth.c

@@ -39,8 +39,7 @@ DSA_METHOD *DSA_meth_new(const char *name, int flags)
 void DSA_meth_free(DSA_METHOD *dsam)
 {
     if (dsam != NULL) {
-        if (dsam->name != NULL)
-            OPENSSL_free(dsam->name);
+        OPENSSL_free(dsam->name);
         OPENSSL_free(dsam);
     }
 }

crypto/rsa/rsa_meth.c

@@ -31,8 +31,7 @@ RSA_METHOD *RSA_meth_new(const char *name, int flags)
 void RSA_meth_free(RSA_METHOD *meth)
 {
     if (meth != NULL) {
-        if (meth->name != NULL)
-            OPENSSL_free(meth->name);
+        OPENSSL_free(meth->name);
         OPENSSL_free(meth);
     }
 }