gprofng/testsuite: correct line continuation in endcases.c

A backslash used to indicate line continuation (in a macro definition
here) is not supposed to be followed by blanks or other white space; the
end-of-line indicator is to follow immediately.

gprofng/testsuite/gprofng.display/synprog/endcases.c

@@ -52,7 +52,7 @@ int x2M = 2000000;
 int x8M = 8000000;
 
 /* define a macro that burns CPU time */
-#define burncpu(nn) \ 
+#define burncpu(nn) \
         x = 0; \
         for (j = 0; j < (nn * x8M); j++) { \
                  x = x + 1; \