Free getline buffer after use (#74899)

* Free getline buffer after use

* Apply Feedback

Co-authored-by: Stephen Toub <[email protected]>

Co-authored-by: Stephen Toub <[email protected]>

Author: HJLeee

src/coreclr/pal/src/thread/process.cpp

@@ -1675,6 +1675,8 @@ GetProcessIdDisambiguationKey(DWORD processId, UINT64 *disambiguationKey)
     {
         TRACE("GetProcessIdDisambiguationKey: getline() FAILED");
         SetLastError(ERROR_INVALID_HANDLE);
+        free(line);
+        fclose(statFile);
         return FALSE;
     }
 
@@ -1691,15 +1693,15 @@ GetProcessIdDisambiguationKey(DWORD processId, UINT64 *disambiguationKey)
         "%*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %*u %*u %*d %*d %*d %*d %*d %*d %llu \n",
          &starttime);
 
+    free(line);
+    fclose(statFile);
+
     if (sscanfRet != 1)
     {
         _ASSERTE(!"Failed to parse stat file contents with sscanf_s.");
         return FALSE;
     }
 
-    free(line);
-    fclose(statFile);
-
     *disambiguationKey = starttime;
     return TRUE;
 

src/native/corehost/hostmisc/pal.unix.cpp

@@ -171,6 +171,7 @@ namespace
         }
 
         fclose(file);
+        free(line);
         if (!found)
             return false;