basic: add missing newline at end of error messages (#2275)

Signed-off-by: Sven van Haastregt <sven.vanhaastregt@arm.com>
diff --git a/test_conformance/basic/main.cpp b/test_conformance/basic/main.cpp
index e89b274..988bb6f 100644
--- a/test_conformance/basic/main.cpp
+++ b/test_conformance/basic/main.cpp
@@ -177,7 +177,7 @@
         }
         else
         {
-            log_error("Error while acquiring half rounding mode");
+            log_error("Error while acquiring half rounding mode\n");
             return TEST_FAIL;
         }
     }
diff --git a/test_conformance/basic/test_progvar.cpp b/test_conformance/basic/test_progvar.cpp
index 00e1dec..a18925c 100644
--- a/test_conformance/basic/test_progvar.cpp
+++ b/test_conformance/basic/test_progvar.cpp
@@ -1100,7 +1100,7 @@
     test_error_ret(status, "Failed to read buffer from device", status);
     if (is_init_valid == 0)
     {
-        log_error("Unexpected default values were detected");
+        log_error("Unexpected default values were detected\n");
         return 1;
     }
 
diff --git a/test_conformance/basic/test_work_item_functions.cpp b/test_conformance/basic/test_work_item_functions.cpp
index 6c2b436..52d789b 100644
--- a/test_conformance/basic/test_work_item_functions.cpp
+++ b/test_conformance/basic/test_work_item_functions.cpp
@@ -526,7 +526,7 @@
             // Validate
             if (!Validate(dim))
             {
-                log_error("Validation failed");
+                log_error("Validation failed\n");
                 return TEST_FAIL;
             }
         }