integrated_instrumentation/basic_cmake: fix coding style issues

Author: pmderodat

testsuite/tests/integrated_instrumentation/basic_cmake/main.c

@@ -1,8 +1,8 @@
 #include <stdio.h>
 
 int
-main()
+main ()
 {
-  printf("Hello world!\n");
+  printf ("Hello world!\n");
   return 0;
 }