Tools/MMaps: Fix static analysis issues

Fix static analysis issue spotted by Coverity "Structurally dead code found"

src/tools/mmaps_generator/MapBuilder.cpp

@@ -782,12 +782,12 @@ namespace MMAP
             if (params.nvp > DT_VERTS_PER_POLYGON)
             {
                 printf("%s Invalid verts-per-polygon value!        \n", tileString);
-                continue;
+                break;
             }
             if (params.vertCount >= 0xffff)
             {
                 printf("%s Too many vertices!                      \n", tileString);
-                continue;
+                break;
             }
             if (!params.vertCount || !params.verts)
             {
@@ -796,7 +796,7 @@ namespace MMAP
 
                 // message is an annoyance
                 //printf("%sNo vertices to build tile!              \n", tileString);
-                continue;
+                break;
             }
             if (!params.polyCount || !params.polys ||
                 TILES_PER_MAP*TILES_PER_MAP == params.polyCount)
@@ -805,19 +805,19 @@ namespace MMAP
                 // keep in mind that we do output those into debug info
                 // drop tiles with only exact count - some tiles may have geometry while having less tiles
                 printf("%s No polygons to build on tile!              \n", tileString);
-                continue;
+                break;
             }
             if (!params.detailMeshes || !params.detailVerts || !params.detailTris)
             {
                 printf("%s No detail mesh to build tile!           \n", tileString);
-                continue;
+                break;
             }
 
             printf("%s Building navmesh tile...\n", tileString);
             if (!dtCreateNavMeshData(&params, &navData, &navDataSize))
             {
                 printf("%s Failed building navmesh tile!           \n", tileString);
-                continue;
+                break;
             }
 
             dtTileRef tileRef = 0;
@@ -828,7 +828,7 @@ namespace MMAP
             if (!tileRef || dtResult != DT_SUCCESS)
             {
                 printf("%s Failed adding tile to navmesh!           \n", tileString);
-                continue;
+                break;
             }
 
             // file output
@@ -841,7 +841,7 @@ namespace MMAP
                 sprintf(message, "[Map %03i] Failed to open %s for writing!\n", mapID, fileName);
                 perror(message);
                 navMesh->removeTile(tileRef, NULL, NULL);
-                continue;
+                break;
             }
 
             printf("%s Writing to file...\n", tileString);