c++11: These look like user-defined literals.

Add a space to keep the compiler happy

src/test/util_tests.cpp

@@ -282,21 +282,21 @@ BOOST_AUTO_TEST_CASE(strprintf_numbers)
 {
     int64_t s64t = -9223372036854775807LL; /* signed 64 bit test value */
     uint64_t u64t = 18446744073709551615ULL; /* unsigned 64 bit test value */
-    BOOST_CHECK(strprintf("%s %d %s", B, s64t, E) == B" -9223372036854775807 "E);
-    BOOST_CHECK(strprintf("%s %u %s", B, u64t, E) == B" 18446744073709551615 "E);
-    BOOST_CHECK(strprintf("%s %x %s", B, u64t, E) == B" ffffffffffffffff "E);
+    BOOST_CHECK(strprintf("%s %d %s", B, s64t, E) == B" -9223372036854775807 " E);
+    BOOST_CHECK(strprintf("%s %u %s", B, u64t, E) == B" 18446744073709551615 " E);
+    BOOST_CHECK(strprintf("%s %x %s", B, u64t, E) == B" ffffffffffffffff " E);
 
     size_t st = 12345678; /* unsigned size_t test value */
     ssize_t sst = -12345678; /* signed size_t test value */
-    BOOST_CHECK(strprintf("%s %d %s", B, sst, E) == B" -12345678 "E);
-    BOOST_CHECK(strprintf("%s %u %s", B, st, E) == B" 12345678 "E);
-    BOOST_CHECK(strprintf("%s %x %s", B, st, E) == B" bc614e "E);
+    BOOST_CHECK(strprintf("%s %d %s", B, sst, E) == B" -12345678 " E);
+    BOOST_CHECK(strprintf("%s %u %s", B, st, E) == B" 12345678 " E);
+    BOOST_CHECK(strprintf("%s %x %s", B, st, E) == B" bc614e " E);
 
     ptrdiff_t pt = 87654321; /* positive ptrdiff_t test value */
     ptrdiff_t spt = -87654321; /* negative ptrdiff_t test value */
-    BOOST_CHECK(strprintf("%s %d %s", B, spt, E) == B" -87654321 "E);
-    BOOST_CHECK(strprintf("%s %u %s", B, pt, E) == B" 87654321 "E);
-    BOOST_CHECK(strprintf("%s %x %s", B, pt, E) == B" 5397fb1 "E);
+    BOOST_CHECK(strprintf("%s %d %s", B, spt, E) == B" -87654321 " E);
+    BOOST_CHECK(strprintf("%s %u %s", B, pt, E) == B" 87654321 " E);
+    BOOST_CHECK(strprintf("%s %x %s", B, pt, E) == B" 5397fb1 " E);
 }
 #undef B
 #undef E