Remove some new memory leaks from SensorManager

After catching an error in Sensor::unflatten, there are memory leaks
caught by the fuzzer in the same test case.

Test: libsensorserviceaidl_fuzzer with testcase from bug
Bug: 269014004
Change-Id: I509cceb41f56ca117d9475f6f6674244560fe582
diff --git a/libs/sensor/ISensorServer.cpp b/libs/sensor/ISensorServer.cpp
index 2278d39..e2aac8c 100644
--- a/libs/sensor/ISensorServer.cpp
+++ b/libs/sensor/ISensorServer.cpp
@@ -67,7 +67,11 @@
         v.setCapacity(n);
         while (n) {
             n--;
-            reply.read(s);
+            if(reply.read(s) != OK) {
+                ALOGE("Failed to read reply from getSensorList");
+                v.clear();
+                break;
+            }
             v.add(s);
         }
         return v;
@@ -85,7 +89,11 @@
         v.setCapacity(n);
         while (n) {
             n--;
-            reply.read(s);
+            if(reply.read(s) != OK) {
+                ALOGE("Failed to read reply from getDynamicSensorList");
+                v.clear();
+                break;
+            }
             v.add(s);
         }
         return v;