test/cmdline: silence clang 12 warning

[ upstream commit 5ac070c ]

clang 12 gives a warning about string concatenation in arrays.
In this case, as it is a long string test the strings are concatenated.
Add parentheses to indicate this.

$ clang --version
clang version 12.0.0 (Fedora 12.0.0-0.3.rc1.fc34)

../app/test/test_cmdline_num.c:204:5: warning:
suspicious concatenation of string literals in an array initialization;
did you mean to separate the elements with a comma?
[-Wstring-concatenation]
"1111000011110000111100001111000011110000111100001111000011110000",
^
../app/test/test_cmdline_num.c:203:3: note:
place parentheses around the string literal to silence warning
"0b1111000011110000111100001111000011110000111100001111000011110000"
^

Signed-off-by: Kevin Traynor <ktraynor@redhat.com>

app/test/test_cmdline_num.c

@@ -200,8 +200,8 @@ const char * num_invalid_strs[] = {
 		"-0x1234580A",
 		"-0b0111010101",
 		/* too long (128+ chars) */
-		"0b1111000011110000111100001111000011110000111100001111000011110000"
-		  "1111000011110000111100001111000011110000111100001111000011110000",
+		("0b1111000011110000111100001111000011110000111100001111000011110000"
+		  "1111000011110000111100001111000011110000111100001111000011110000"),
 		"1E3",
 		"0A",
 		"-B",