[PATCH] tests: Fix specifying constant of double type

[Khem Raj]

'd' suffix seems to be not acceptable by clang compiler
Using 'e0' fixes this by keeping value to be same

Fixes
funcretval_test_struct.c:83:27: error: invalid suffix 'd' on floating constant
   83 |   dpoint_t dp = dmkpt (3.0d, 1.0d);
      |                           ^
funcretval_test_struct.c:83:33: error: invalid suffix 'd' on floating constant
   83 |   dpoint_t dp = dmkpt (3.0d, 1.0d);
      |

Signed-off-by: Khem Raj <raj.k...@gmail.com>
---
 tests/funcretval_test_struct.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/funcretval_test_struct.c b/tests/funcretval_test_struct.c
index df94bde0..6bf82f7d 100644
--- a/tests/funcretval_test_struct.c
+++ b/tests/funcretval_test_struct.c
@@ -80,7 +80,7 @@ main (void)
   div_t d = div (3, 2);
   ldiv_t ld = ldiv (3, 2);
   point_t p = mkpt (3.0f, 1.0f);
-  dpoint_t dp = dmkpt (3.0d, 1.0d);
+  dpoint_t dp = dmkpt (3.0e0, 1.0e0);
 
   return d.q - (int) p.y + ld.q - (int) dp.y;
 }