Fix a few more warnings in small configurations
diff --git a/programs/pkey/ecdsa.c b/programs/pkey/ecdsa.c
index ac3bdee..efe6716 100644
--- a/programs/pkey/ecdsa.c
+++ b/programs/pkey/ecdsa.c
@@ -49,7 +49,7 @@
     ((void) argv);
 
     printf("POLARSSL_ECDSA_C and/or "
-           "POLARSSL_ENTROPY_C and/or POLARSSL_CTR_DRBG_C not defined\n"
+           "POLARSSL_ENTROPY_C and/or POLARSSL_CTR_DRBG_C not defined\n");
     return( 0 );
 }
 #else