Fix handling of PCP process arguments with space then slash

Sync up with similar code from Linux platform, so that such
processes are correctly shaded and do not trip an assert in
debug builds.

pcp/PCPProcessList.c

@@ -288,15 +288,23 @@ static void PCPProcessList_updateCmdline(Process* process, int pid, int offset,
       process->isKernelThread = true;
    }
 
+   int tokenEnd = 0;
    int tokenStart = 0;
+   bool argSepSpace = false;
+
    for (int i = 0; i < length; i++) {
       /* htop considers the next character after the last / that is before
        * basenameOffset, as the start of the basename in cmdline - see
        * Process_writeCommand */
       if (command[i] == '/')
          tokenStart = i + 1;
+      /* special-case arguments for problematic situations like "find /" */
+      if (command[i] <= ' ')
+	 argSepSpace = true;
    }
-   int tokenEnd = length;
+   tokenEnd = length;
+   if (argSepSpace)
+      tokenStart = 0;
 
    Process_updateCmdline(process, command, tokenStart, tokenEnd);
    free(value.cp);