Use bool and rename variable for ease of comprehension in ps_title.c

Author: Girgias

sapi/cli/ps_title.c

@@ -46,6 +46,7 @@ extern char** environ;
 #include <unistd.h>
 #endif
 
+#include <stdbool.h>
 #include <string.h>
 #include <stdlib.h>
 
@@ -154,31 +155,34 @@ char** save_ps_args(int argc, char** argv)
      */
     {
         char* end_of_area = NULL;
-        int non_contiguous_area = 0;
+        bool is_contiguous_area = true;
         int i;
 
         /*
          * check for contiguous argv strings
          */
-        for (i = 0; (non_contiguous_area == 0) && (i < argc); i++)
+        for (i = 0; is_contiguous_area && (i < argc); i++)
         {
-            if (i != 0 && end_of_area + 1 != argv[i])
-                non_contiguous_area = 1;
+            if (i != 0 && end_of_area + 1 != argv[i]) {
+                is_contiguous_area = false;
+            }
             end_of_area = argv[i] + strlen(argv[i]);
         }
 
         /*
          * check for contiguous environ strings following argv
          */
-        for (i = 0; (non_contiguous_area == 0) && (environ[i] != NULL); i++)
+        for (i = 0; is_contiguous_area && (environ[i] != NULL); i++)
         {
-            if (end_of_area + 1 != environ[i])
-                non_contiguous_area = 1;
+            if (end_of_area + 1 != environ[i]) {
+                is_contiguous_area = false;
+            }
             end_of_area = environ[i] + strlen(environ[i]);
         }
 
-        if (non_contiguous_area != 0)
+        if (!is_contiguous_area) {
             goto clobber_error;
+        }
 
         ps_buffer = argv[0];
         ps_buffer_size = end_of_area - argv[0];
@@ -188,8 +192,9 @@ char** save_ps_args(int argc, char** argv)
          */
         new_environ = (char **) malloc((i + 1) * sizeof(char *));
         frozen_environ = (char **) malloc((i + 1) * sizeof(char *));
-        if (!new_environ || !frozen_environ)
+        if (!new_environ || !frozen_environ) {
             goto clobber_error;
+        }
         for (i = 0; environ[i] != NULL; i++)
         {
             new_environ[i] = strdup(environ[i]);