This PR fixes a file descriptor leak in the GPU monitoring module. #181
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The code uses popen() to query GPU utilization but does not call pclose(). As a result, each update cycle leaks one file descriptor. After long-running sessions, the process reaches the FD limit (1024), causing failures in popen(), portable-file-dialogs, and UI features relying on fork/pipe. This patch adds the missing pclose() and ensures proper cleanup. Tested: FD count remains stable during long runtime after the fix.
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The code uses popen() to query GPU utilization but does not call pclose(). As a result, each update cycle leaks one file descriptor. After long-running sessions, the process reaches the FD limit (1024), causing failures in popen(), portable-file-dialogs, and UI features relying on fork/pipe.
This patch adds the missing pclose() and ensures proper cleanup.
Tested: FD count remains stable during long runtime after the fix.