Remove further extraneous whitespace in lcov script

Signed-off-by: Thomas Daubney <thomas.daubney@arm.com>
diff --git a/scripts/lcov.sh b/scripts/lcov.sh
index 1969b39..0584a0a 100755
--- a/scripts/lcov.sh
+++ b/scripts/lcov.sh
@@ -32,7 +32,7 @@
 
 # Repository detection
 in_mbedtls_build_dir () {
-     test -d library
+    test -d library
 }
 
 # Collect stats and build a HTML report.