8303071: Memory leaks in libjdwp

Reviewed-by: sspitsyn

src/jdk.jdwp.agent/share/native/libjdwp/transport.c

@@ -508,7 +508,7 @@ transport_startTransport(jboolean isServer, char *name, char *address,
     trans = info->transport;
 
     if (isServer) {
-        char *retAddress;
+        char *retAddress = NULL;
         char *launchCommand;
         jvmtiError error;
         int len;
@@ -607,9 +607,13 @@ transport_startTransport(jboolean isServer, char *name, char *address,
                     name, retAddress));
             }
         }
+        jvmtiDeallocate(retAddress);
         return JDWP_ERROR(NONE);
 
 handleError:
+        if (retAddress != NULL) {
+            jvmtiDeallocate(retAddress);
+        }
         freeTransportInfo(info);
     } else {
         /*

src/jdk.jdwp.agent/share/native/libjdwp/util.c

@@ -243,6 +243,7 @@ util_initialize(JNIEnv *env)
         }
         localSystemThreadGroup = groups[0];
         saveGlobalRef(env, localSystemThreadGroup, &(gdata->systemThreadGroup));
+        jvmtiDeallocate(groups);
 
         /* Get some basic Java property values we will need at some point */
         gdata->property_java_version